diff --git a/kochkareva_elizaveta_lab_3/README.md b/kochkareva_elizaveta_lab_3/README.md
new file mode 100644
index 0000000..45a341b
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/README.md
@@ -0,0 +1,280 @@
+
+# Лабораторная работа 3. 
+
+### Задание
+**Цель**: изучение современных технологий контейнеризации.
+
+**Задачи**:
+
+- Установить средство контейнеризации docker.
+- Изучить применение и принципы docker.
+- Изучить утилиту docker-compose и структуру файла docker-compose.yml.
+- Развернуть не менее 3х различных сервисов при помощи docker-compose.
+- Оформить отчёт в формате Markdown и создать Pull Request в git-репозитории.
+
+### Как запустить лабораторную работу
+В директории с файлом характеристик docker-compose.yaml выполнить команду:
+```
+docker-compose -f docker-compose.yaml up
+```
+### Описание лабораторной работы
+#### Создание базы данных
+Каждый сервис реализует CRUD-операции, поэтому были выбраны следующие сущности, соответствующие теме диплома: упражнение и тренировка. Эти сущности связаны отношением один ко многим. Созданные таблицы базы данных:
+
+```sql
+-- Создание таблицы тренировок
+CREATE TABLE t_training (
+                     id SERIAL PRIMARY KEY,
+                     name VARCHAR(255) NOT NULL,
+                     description VARCHAR(255) NOT NULL
+);
+-- Создание таблицы упражнений
+CREATE TABLE t_exercise (
+                     id SERIAL PRIMARY KEY,
+                     name VARCHAR(255) NOT NULL,
+                     description VARCHAR(255) NOT NULL,
+                     id_training INTEGER,
+                     FOREIGN KEY (id_training) REFERENCES t_training(id)
+);
+```
+
+Также в файле `docker-compose.yaml` создадим соответствующий сервис:
+```dockerfile
+#database
+  postgresql:
+    #configuration
+    image: postgres:latest
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_PASSWORD: admin
+      POSTGRES_USER: admin
+      POSTGRES_DB: traininarium
+    volumes:
+      - ./database.sql:/docker-entrypoint-initdb.d/database.sql
+    restart: always
+    networks:
+      - mynetwork
+```
+
+- `image: postgres:latest` указывает, что мы хотим использовать последнюю версию образа `PostgreSQL`.
+- `ports: - 5432:5432` пробрасывает порт 5432 контейнера (стандартный порт PostgreSQL) на порт 5432 хоста, чтобы можно было подключаться к базе данных с внешнего устройства.
+- `environment` определяет переменные окружения, которые будут использоваться контейнером. В данном случае, устанавливаются значения для переменных `POSTGRES_PASSWORD`, `POSTGRES_USER` и `POSTGRES_DB`.
+- `volumes` указывает путь к файлу `database.sql` в текущей директории, который будет использоваться для инициализации базы данных при запуске контейнера.
+- `restart: always` гарантирует, что контейнер будет перезапущен автоматически, если он остановится или перезагрузится.
+- `networks` определяет сеть, к которой будет присоединен контейнер. В данном случае, контейнер будет присоединен к сети с именем `mynetwork`.
+
+В итоге будет создан контейнер с базой данных `PostgreSQL`, настроенной с указанными переменными окружения, проброшенным портом и файлом `database.sql` для инициализации базы данных.
+
+#### Создание микросервиса *Упражнения*
+После реализации необходимых элементов микросервиса, таких как: controller, model, modelDTO, repository и service, создадим конфигурационный файл Dockerfile, в котором пропишем следующее:
+```dockerfile
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./exercise-app/build/libs/exercise-app-0.0.1-SNAPSHOT.jar /app/exercise-app-0.0.1-SNAPSHOT.jar
+EXPOSE 8081
+
+CMD ["java", "-jar", "exercise-app-0.0.1-SNAPSHOT.jar"]
+```
+В данном файле мы указываем базовый образ, который будет использован для создания контейнера (*OpenJDK* версии 17 с установленным *JDK*); устанавливаем рабочую директорию внутри контейнера, где будут размещены файлы приложения;  указываем, что приложение внутри контейнера будет слушать на порту 8081 и определяем команду, которая будет выполнена при запуске контейнера, а именно запуск приложения *Java* из файла `exercise-app-0.0.1-SNAPSHOT.jar` внутри контейнера.
+
+Также в файле `docker-compose.yaml` создадим соответствующий сервис:
+```dockerfile
+ exercise-service:
+    build:
+      context: .
+      dockerfile: ./exercise-app/Dockerfile
+    ports:
+      - 8081:8081
+    environment:
+      DATASOURCE_URL: jdbc:postgresql://postgresql:5432/traininarium
+      DATASOURCE_USERNAME: admin
+      DATASOURCE_PASSWORD: admin
+    restart: always
+    #wait build database
+    depends_on:
+      - postgresql
+    networks:
+      - mynetwork
+```
+- `exercise-service` является именем сервиса, который будет создан и запущен в контейнере.
+- `context: .` указывает, что контекстом для сборки Docker-образа является текущая директория.
+- `dockerfile: ./exercise-app/Dockerfile` указывает путь к `Dockerfile`, который будет использоваться для сборки образа.
+- `ports` определяет проброс портов между хостом и контейнером.
+`8081:8081` указывает, что порт 8081 на хосте будет проброшен на порт 8081 внутри контейнера.
+- `environment` определяет переменные окружения, которые будут доступны внутри контейнера.
+`DATASOURCE_URL: jdbc:postgresql://postgresql:5432/traininarium` определяет URL для подключения к базе данных `PostgreSQL`.
+`DATASOURCE_USERNAME: admin` определяет имя пользователя для подключения к базе данных.
+`DATASOURCE_PASSWORD: admin` определяет пароль для подключения к базе данных.
+- `restart: always` указывает, что контейнер будет автоматически перезапущен в случае его остановки.
+depends_on определяет зависимость данного сервиса от другого сервиса.
+- `postgresql` указывает, что данный сервис зависит от сервиса с именем `postgresql`.
+- `mynetwork` указывает, что контейнер будет присоединен к сети с именем `mynetwork`.
+
+#### Создание микросервиса *Тренировки*
+Аналогично реализуем controller, model, modelDTO, repository и service для микросервиса *Тренировки*, но дополняя кодом отправки запроса к сервису *Упражнений*. Пример запроса к сервису *Упражнений*:
+
+```java
+public List<TrainingDto> findAllTraining() throws Exception {
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        List<TrainingDto> trainingDtos = new ArrayList<>();
+        for (Training training : trainingRepository.findAll()) {
+            TrainingDto trainingDto = new TrainingDto();
+            trainingDto.setId(training.getId());
+            trainingDto.setName(training.getName());
+            trainingDto.setDescription(training.getDescription());
+
+            ResponseEntity<String> response = restTemplate.exchange(
+                    "http://" + exercise_service_host + "/exercise/training/" + trainingDto.getId(), HttpMethod.GET, entity, String.class);
+
+            if (response.getStatusCode().is2xxSuccessful()) {
+                String responseBody = response.getBody();
+                ObjectMapper objectMapper = new ObjectMapper();
+                List<ExerciseDto> exerciseDtos;
+                try {
+                    exerciseDtos = objectMapper.readValue(responseBody, ArrayList.class);
+                    trainingDto.setExercises(exerciseDtos);
+                } catch (JsonProcessingException e) {
+                    throw new Exception("Не удалось десериализовать тело запроса в объект");
+                }
+            } else {
+                throw new Exception("Ошибка получения объекта");
+            }
+            trainingDtos.add(trainingDto);
+        }
+        return trainingDtos;
+    }
+```
+Теперь создадим конфигурационный файл Dockerfile, в котором пропишем следующее:
+```dockerfile
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./training-app/build/libs/training-app-0.0.1-SNAPSHOT.jar /app/training-app-0.0.1-SNAPSHOT.jar
+EXPOSE 8082
+
+CMD ["java", "-jar", "training-app-0.0.1-SNAPSHOT.jar"]
+```
+В данном файле мы указываем базовый образ, который будет использован для создания контейнера (*OpenJDK* версии 17 с установленным *JDK*); устанавливаем рабочую директорию внутри контейнера, где будут размещены файлы приложения;  указываем, что приложение внутри контейнера будет слушать на порту 8082; копируем файл `training-app-0.0.1-SNAPSHOT.jar` из локальной директории `./training-app/build/libs/` внутрь контейнера в папку `/app` и определяем команду, которая будет выполнена при запуске контейнера, а именно запуск приложения Java из файла `training-app-0.0.1-SNAPSHOT.jar` внутри контейнера.
+
+Также в файле `docker-compose.yaml` создадим соответствующий сервис:
+```dockerfile
+training-service:
+    build:
+      context: .
+      dockerfile: ./training-app/Dockerfile
+    ports:
+      - 8082:8082
+    environment:
+      EXERCISE_SERVICE_HOST: exercise-service:8081
+      DATASOURCE_URL: jdbc:postgresql://postgresql:5432/traininarium
+      DATASOURCE_USERNAME: admin
+      DATASOURCE_PASSWORD: admin
+    restart: always
+    #wait build database
+    depends_on:
+      - postgresql
+    networks:
+      - mynetwork
+```
+
+- `training-service` является именем сервиса, который будет создан и запущен в контейнере.
+- `context: .` указывает, что контекстом для сборки Docker-образа является текущая директория.
+- `dockerfile: ./training-app/Dockerfile` указывает путь к `Dockerfile`, который будет использоваться для сборки образа.
+- `8082:8082` указывает, что порт 8082 на хосте будет проброшен на порт 8082 внутри контейнера.
+- `environment` определяет переменные окружения, которые будут доступны внутри контейнера.
+`EXERCISE_SERVICE_HOST: exercise-service:8081` определяет хост и порт для подключения к сервису `exercise-service`.
+`DATASOURCE_URL: jdbc:postgresql://postgresql:5432/traininarium` определяет URL для подключения к базе данных `PostgreSQL`.
+`DATASOURCE_USERNAME: admin` определяет имя пользователя для подключения к базе данных.
+`DATASOURCE_PASSWORD: admin` определяет пароль для подключения к базе данных.
+- `restart: always` указывает, что контейнер будет автоматически перезапущен в случае его остановки.
+- `depends_on` определяет зависимость данного сервиса от другого сервиса, данный сервис зависит от сервиса с именем `postgresql`.
+- `mynetwork` указывает, что контейнер будет присоединен к сети с именем `mynetwork`.
+
+#### Реализация gateway при помощи *nginx*
+
+Для того, чтобы использовать *Nginx* для обработки HTTP-запросов и маршрутизации их к соответствующим сервисам, создадим файл конфигурации *Nginx*:
+
+```
+events {
+    worker_connections  1024;
+}
+
+http {
+
+    upstream exercise-service {
+        server exercise-service:8081;
+    }
+    upstream training-service {
+        server training-service:8082;
+    }
+
+    server {
+        
+        listen 80;
+        listen      [::]:80;
+        server_name localhost;
+        
+        location /exercise-service/ {
+            proxy_pass http://exercise-service/;
+        }
+        
+        location /training-service/ {
+            proxy_pass http://training-service/;
+        }
+    }
+}
+```
+- `events` определяет настройки событий для сервера *Nginx*.
+  - `worker_connections 1024` указывает максимальное количество одновременных соединений, которые могут быть обработаны сервером.
+- `http` определяет настройки HTTP-сервера *Nginx*.
+  - `upstream` определяет группу серверов, которые могут обрабатывать запросы.
+`exercise-service` определяет группу серверов с именем `exercise-service`, в которой находится только один сервер `exercise-service:8081`.
+`training-service` определяет группу серверов с именем `training-service`, в которой находится только один сервер `training-service:8082`.
+  - `server` определяет настройки для конкретного виртуального сервера.
+    - `listen 80` указывает на порт, на котором сервер будет слушать входящие HTTP-запросы.
+    - `listen [::]:80` указывает на IPv6-адрес и порт, на котором сервер будет слушать входящие HTTP-запросы.
+    - `server_name localhost` указывает имя сервера.
+    - `location /exercise-service/` определяет местоположение для обработки запросов, которые начинаются с `/exercise-service/`.
+`proxy_pass http://exercise-service/` указывает, что все запросы, начинающиеся с `/exercise-service/`, должны быть перенаправлены на группу серверов `exercise-service`.
+    - `location /training-service/` определяет местоположение для обработки запросов, которые начинаются с `/training-service/`.
+`proxy_pass http://training-service/` указывает, что все запросы, начинающиеся с `/training-service/`, должны быть перенаправлены на группу серверов `training-service`.
+
+
+Таким образом, при запуске сервера *Nginx* с использованием этого конфигурационного файла, сервер будет слушать входящие HTTP-запросы на порту 80 и маршрутизировать запросы, начинающиеся с `/exercise-service/`, на группу серверов `exercise-service`, а запросы, начинающиеся с `/training-service/`, на группу серверов `training-service`.
+
+Далее в файле `docker-compose.yaml` создадим соответствующий сервис:
+
+```dockerfile
+nginx:
+    #configuration
+    image: nginx:latest
+    ports:
+      - 80:80
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+    restart: always
+    depends_on:
+      - training-service
+      - exercise-service
+    networks:
+      - mynetwork
+```
+
+- `nginx` - это название сервиса, который будет запущен в контейнере.
+- `image: nginx:latest` указывает на использование последней версии образа *Nginx* из *Docker Hub*.
+- `80:80` пробрасывает порт 80 контейнера на порт 80 хостовой машины.
+- `volumes` определяет привязку тома между контейнером и хостовой машиной.
+  - `./nginx.conf:/etc/nginx/nginx.conf` привязывает файл `nginx.conf` из текущего рабочего каталога хостовой машины к файлу `nginx.conf` внутри контейнера *Nginx*. Это позволяет настроить *Nginx* с помощью внешнего файла конфигурации.
+- `restart: always` указывает, что контейнер должен быть автоматически перезапущен при его остановке или падении.
+- `depends_on` указывает на зависимость этого сервиса от других сервисов.
+  - `training-service` указывает, что контейнер Nginx должен быть запущен после контейнера `training-service`.
+  - `exercise-service` указывает, что контейнер Nginx должен быть запущен после контейнера `exercise-service`.
+- `networks` определяет сети, к которым будет присоединен контейнер.
+  - `mynetwork` добавляет контейнер в сеть с именем `mynetwork`.
+
+  ### Видео
+
+https://disk.yandex.ru/i/OYPw_Tzl0QrzIw
\ No newline at end of file
diff --git a/kochkareva_elizaveta_lab_3/database.sql b/kochkareva_elizaveta_lab_3/database.sql
new file mode 100644
index 0000000..eba085e
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/database.sql
@@ -0,0 +1,14 @@
+-- Создание таблицы тренировок
+CREATE TABLE t_training (
+                     id SERIAL PRIMARY KEY,
+                     name VARCHAR(255) NOT NULL,
+                     description VARCHAR(255) NOT NULL
+);
+-- Создание таблицы упражнений
+CREATE TABLE t_exercise (
+                     id SERIAL PRIMARY KEY,
+                     name VARCHAR(255) NOT NULL,
+                     description VARCHAR(255) NOT NULL,
+                     id_training INTEGER,
+                     FOREIGN KEY (id_training) REFERENCES t_training(id)
+);
diff --git a/kochkareva_elizaveta_lab_3/docker-compose.yaml b/kochkareva_elizaveta_lab_3/docker-compose.yaml
new file mode 100644
index 0000000..a1f4b45
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/docker-compose.yaml
@@ -0,0 +1,73 @@
+version: '3'
+
+networks:
+  mynetwork:
+    driver: bridge
+
+#all necessary containers(services)
+services:
+  #database
+  postgresql:
+    #configuration
+    image: postgres:latest
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_PASSWORD: admin
+      POSTGRES_USER: admin
+      POSTGRES_DB: traininarium
+    volumes:
+      - ./database.sql:/docker-entrypoint-initdb.d/database.sql
+    restart: always
+    networks:
+      - mynetwork
+  
+  exercise-service:
+    build:
+      context: .
+      dockerfile: ./exercise-app/Dockerfile
+    ports:
+      - 8081:8081
+    environment:
+      DATASOURCE_URL: jdbc:postgresql://postgresql:5432/traininarium
+      DATASOURCE_USERNAME: admin
+      DATASOURCE_PASSWORD: admin
+    restart: always
+    #wait build database
+    depends_on:
+      - postgresql
+    networks:
+      - mynetwork
+    
+  training-service:
+    build:
+      context: .
+      dockerfile: ./training-app/Dockerfile
+    ports:
+      - 8082:8082
+    environment:
+      EXERCISE_SERVICE_HOST: exercise-service:8081
+      DATASOURCE_URL: jdbc:postgresql://postgresql:5432/traininarium
+      DATASOURCE_USERNAME: admin
+      DATASOURCE_PASSWORD: admin
+    restart: always
+    #wait build database
+    depends_on:
+      - postgresql
+    networks:
+      - mynetwork
+
+  nginx:
+    #configuration
+    image: nginx:latest
+    ports:
+      - 80:80
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf
+    restart: always
+    depends_on:
+      - training-service
+      - exercise-service
+    networks:
+      - mynetwork
+
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/.gitignore b/kochkareva_elizaveta_lab_3/exercise-app/.gitignore
new file mode 100644
index 0000000..c2065bc
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/Dockerfile b/kochkareva_elizaveta_lab_3/exercise-app/Dockerfile
new file mode 100644
index 0000000..d12490c
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/Dockerfile
@@ -0,0 +1,7 @@
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./exercise-app/build/libs/exercise-app-0.0.1-SNAPSHOT.jar /app/exercise-app-0.0.1-SNAPSHOT.jar
+EXPOSE 8081
+
+CMD ["java", "-jar", "exercise-app-0.0.1-SNAPSHOT.jar"]
\ No newline at end of file
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/build.gradle b/kochkareva_elizaveta_lab_3/exercise-app/build.gradle
new file mode 100644
index 0000000..7aac20b
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/build.gradle
@@ -0,0 +1,42 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.1.5'
+	id 'io.spring.dependency-management' version '1.1.3'
+}
+
+group = 'com.services'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	sourceCompatibility = '17'
+}
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-devtools'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.0.3'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'org.postgresql:postgresql'
+	annotationProcessor 'org.projectlombok:lombok'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('bootBuildImage') {
+	builder = 'paketobuildpacks/builder-jammy-base:latest'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/gradle/wrapper/gradle-wrapper.jar b/kochkareva_elizaveta_lab_3/exercise-app/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7f93135
Binary files /dev/null and b/kochkareva_elizaveta_lab_3/exercise-app/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/gradle/wrapper/gradle-wrapper.properties b/kochkareva_elizaveta_lab_3/exercise-app/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..3fa8f86
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/gradlew b/kochkareva_elizaveta_lab_3/exercise-app/gradlew
new file mode 100644
index 0000000..1aa94a4
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/gradlew.bat b/kochkareva_elizaveta_lab_3/exercise-app/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/settings.gradle b/kochkareva_elizaveta_lab_3/exercise-app/settings.gradle
new file mode 100644
index 0000000..344554f
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'exercise-app'
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/ExerciseAppApplication.java b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/ExerciseAppApplication.java
new file mode 100644
index 0000000..a5cda36
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/ExerciseAppApplication.java
@@ -0,0 +1,13 @@
+package com.services.exerciseapp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ExerciseAppApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(ExerciseAppApplication.class, args);
+	}
+
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/controller/ExerciseController.java b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/controller/ExerciseController.java
new file mode 100644
index 0000000..2597a37
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/controller/ExerciseController.java
@@ -0,0 +1,49 @@
+package com.services.exerciseapp.controller;
+
+import com.services.exerciseapp.model.Exercise;
+import com.services.exerciseapp.modelDto.ExerciseDto;
+import com.services.exerciseapp.service.ExerciseService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/exercise")
+public class ExerciseController {
+    private final ExerciseService exerciseService;
+
+    public ExerciseController(ExerciseService exerciseService) {
+        this.exerciseService = exerciseService;
+    }
+
+    @GetMapping("/")
+    public List<Exercise> getExercises(){
+        return exerciseService.findAllExercise();
+    }
+
+    @GetMapping("/{id}")
+    public Exercise getExercise(@PathVariable int id){
+        return exerciseService.findById(id);
+    }
+
+    @GetMapping("/training/{id}")
+    public List<Exercise> getTrainingExercises(@PathVariable int id){
+        return exerciseService.findTrainingExercises(id);
+    }
+
+    @PostMapping("/")
+    public Exercise createExercise(@RequestBody ExerciseDto exerciseDto){
+        return exerciseService.addExercise(exerciseDto);
+    }
+
+    @PutMapping("/")
+    public Exercise updateExercise(@RequestBody ExerciseDto exerciseDto){
+        return exerciseService.updateExercise(exerciseDto);
+    }
+
+    @DeleteMapping("/{id}")
+    public void deleteExercise(@PathVariable int id){
+        exerciseService.deleteExercise(id);
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/model/Exercise.java b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/model/Exercise.java
new file mode 100644
index 0000000..6b08a99
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/model/Exercise.java
@@ -0,0 +1,50 @@
+package com.services.exerciseapp.model;
+
+import jakarta.persistence.*;
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+@Entity
+@Table(name = "t_exercise")
+@Data
+@Accessors(chain = true)
+public class Exercise {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+    private String name;
+    private String description;
+    private Integer id_training;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Integer getId_training() {
+        return id_training;
+    }
+
+    public void setId_training(Integer id_training) {
+        this.id_training = id_training;
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/modelDto/ExerciseDto.java b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/modelDto/ExerciseDto.java
new file mode 100644
index 0000000..32e9ffe
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/modelDto/ExerciseDto.java
@@ -0,0 +1,43 @@
+package com.services.exerciseapp.modelDto;
+
+import jakarta.annotation.Nullable;
+
+public class ExerciseDto {
+    private int id;
+    private String name;
+    private String description;
+    @Nullable
+    private Integer id_training;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Integer getId_training() {
+        return id_training;
+    }
+
+    public void setId_training(Integer id_training) {
+        this.id_training = id_training;
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/repository/ExerciseRepository.java b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/repository/ExerciseRepository.java
new file mode 100644
index 0000000..846dd3d
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/repository/ExerciseRepository.java
@@ -0,0 +1,7 @@
+package com.services.exerciseapp.repository;
+
+import com.services.exerciseapp.model.Exercise;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ExerciseRepository extends JpaRepository<Exercise, Integer> {
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/service/ExerciseService.java b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/service/ExerciseService.java
new file mode 100644
index 0000000..6228598
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/java/com/services/exerciseapp/service/ExerciseService.java
@@ -0,0 +1,57 @@
+package com.services.exerciseapp.service;
+
+import com.services.exerciseapp.model.Exercise;
+import com.services.exerciseapp.modelDto.ExerciseDto;
+import com.services.exerciseapp.repository.ExerciseRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ExerciseService {
+    private final ExerciseRepository exerciseRepository;
+
+    public ExerciseService(ExerciseRepository exerciseRepository) {
+        this.exerciseRepository = exerciseRepository;
+    }
+
+    public List<Exercise> findAllExercise(){
+        return exerciseRepository.findAll();
+    }
+
+    public Exercise findById(int id){
+        return exerciseRepository.findById(id).orElseThrow();
+    }
+
+    public List<Exercise> findTrainingExercises(int training_id){
+        return exerciseRepository.findAll().stream()
+                .filter(exercise -> exercise.getId_training() != null)
+                .filter(exercise -> exercise.getId_training() == training_id)
+                .toList();
+    }
+
+    public Exercise addExercise(ExerciseDto exerciseDto) {
+        Exercise exercise = new Exercise();
+        exercise.setName(exerciseDto.getName());
+        exercise.setDescription(exerciseDto.getDescription());
+        if (exerciseDto.getId_training() != null) {
+            exercise.setId_training(exerciseDto.getId_training());
+        }
+        return exerciseRepository.save(exercise);
+    }
+
+    public Exercise updateExercise(ExerciseDto exerciseDto){
+        Exercise exercise = exerciseRepository.findById(exerciseDto.getId()).orElseThrow();
+        exercise.setName(exerciseDto.getName());
+        exercise.setDescription(exerciseDto.getDescription());
+        if (exerciseDto.getId_training() != null) {
+            exercise.setId_training(exerciseDto.getId_training());
+        }
+        return exerciseRepository.save(exercise);
+    }
+
+    public void deleteExercise(int id){
+        exerciseRepository.delete(exerciseRepository.findById(id).orElseThrow());
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/main/resources/application.yaml b/kochkareva_elizaveta_lab_3/exercise-app/src/main/resources/application.yaml
new file mode 100644
index 0000000..a3407b0
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/main/resources/application.yaml
@@ -0,0 +1,7 @@
+server:
+  port: "8081"
+spring:
+  datasource:
+    url: ${DATASOURCE_URL:jdbc:postgresql://localhost:5432/traininarium}
+    username: ${DATASOURCE_USERNAME:admin}
+    password: ${DATASOURCE_PASSWORD:admin}
diff --git a/kochkareva_elizaveta_lab_3/exercise-app/src/test/java/com/services/exerciseapp/ExerciseAppApplicationTests.java b/kochkareva_elizaveta_lab_3/exercise-app/src/test/java/com/services/exerciseapp/ExerciseAppApplicationTests.java
new file mode 100644
index 0000000..5a4b820
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/exercise-app/src/test/java/com/services/exerciseapp/ExerciseAppApplicationTests.java
@@ -0,0 +1,13 @@
+package com.services.exerciseapp;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ExerciseAppApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}
diff --git a/kochkareva_elizaveta_lab_3/kind-windows-amd64.exe b/kochkareva_elizaveta_lab_3/kind-windows-amd64.exe
new file mode 100644
index 0000000..aafe71e
Binary files /dev/null and b/kochkareva_elizaveta_lab_3/kind-windows-amd64.exe differ
diff --git a/kochkareva_elizaveta_lab_3/nginx.conf b/kochkareva_elizaveta_lab_3/nginx.conf
new file mode 100644
index 0000000..1f51f6f
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/nginx.conf
@@ -0,0 +1,28 @@
+events {
+    worker_connections  1024;
+}
+
+http {
+
+    upstream exercise-service {
+        server exercise-service:8081;
+    }
+    upstream training-service {
+        server training-service:8082;
+    }
+
+    server {
+        
+        listen 80;
+        listen      [::]:80;
+        server_name localhost;
+        
+        location /exercise-service/ {
+            proxy_pass http://exercise-service/;
+        }
+        
+        location /training-service/ {
+            proxy_pass http://training-service/;
+        }
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/.gitignore b/kochkareva_elizaveta_lab_3/training-app/.gitignore
new file mode 100644
index 0000000..c2065bc
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/kochkareva_elizaveta_lab_3/training-app/Dockerfile b/kochkareva_elizaveta_lab_3/training-app/Dockerfile
new file mode 100644
index 0000000..b0c5d69
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/Dockerfile
@@ -0,0 +1,7 @@
+FROM openjdk:17-jdk
+
+WORKDIR /app
+COPY ./training-app/build/libs/training-app-0.0.1-SNAPSHOT.jar /app/training-app-0.0.1-SNAPSHOT.jar
+EXPOSE 8082
+
+CMD ["java", "-jar", "training-app-0.0.1-SNAPSHOT.jar"]
\ No newline at end of file
diff --git a/kochkareva_elizaveta_lab_3/training-app/build.gradle b/kochkareva_elizaveta_lab_3/training-app/build.gradle
new file mode 100644
index 0000000..7aac20b
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/build.gradle
@@ -0,0 +1,42 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.1.5'
+	id 'io.spring.dependency-management' version '1.1.3'
+}
+
+group = 'com.services'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	sourceCompatibility = '17'
+}
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-devtools'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.0.3'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'org.postgresql:postgresql'
+	annotationProcessor 'org.projectlombok:lombok'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('bootBuildImage') {
+	builder = 'paketobuildpacks/builder-jammy-base:latest'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/gradle/wrapper/gradle-wrapper.jar b/kochkareva_elizaveta_lab_3/training-app/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7f93135
Binary files /dev/null and b/kochkareva_elizaveta_lab_3/training-app/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/kochkareva_elizaveta_lab_3/training-app/gradle/wrapper/gradle-wrapper.properties b/kochkareva_elizaveta_lab_3/training-app/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..3fa8f86
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/kochkareva_elizaveta_lab_3/training-app/gradlew b/kochkareva_elizaveta_lab_3/training-app/gradlew
new file mode 100644
index 0000000..1aa94a4
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/kochkareva_elizaveta_lab_3/training-app/gradlew.bat b/kochkareva_elizaveta_lab_3/training-app/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/kochkareva_elizaveta_lab_3/training-app/settings.gradle b/kochkareva_elizaveta_lab_3/training-app/settings.gradle
new file mode 100644
index 0000000..1a4b118
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'training-app'
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/TrainingAppApplication.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/TrainingAppApplication.java
new file mode 100644
index 0000000..5272c92
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/TrainingAppApplication.java
@@ -0,0 +1,13 @@
+package com.services.trainingapp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class TrainingAppApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(TrainingAppApplication.class, args);
+	}
+
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/controller/TrainingController.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/controller/TrainingController.java
new file mode 100644
index 0000000..2dbcab3
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/controller/TrainingController.java
@@ -0,0 +1,49 @@
+package com.services.trainingapp.controller;
+
+import com.services.trainingapp.model.Training;
+import com.services.trainingapp.modelDto.TrainingDto;
+import com.services.trainingapp.service.TrainingService;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/training")
+public class TrainingController {
+    private final TrainingService trainingService;
+
+    public TrainingController(TrainingService trainingService) {
+        this.trainingService = trainingService;
+    }
+
+    @GetMapping("/")
+    public List<TrainingDto> getTrainings() throws Exception {
+        return trainingService.findAllTraining();
+    }
+
+    @GetMapping("/{id}")
+    public TrainingDto getTraining(@PathVariable int id) throws Exception {
+        return trainingService.findById(id);
+    }
+
+    @PostMapping("/")
+    public Training createTraining(@RequestBody TrainingDto trainingDto){
+        return trainingService.addTraining(trainingDto);
+    }
+
+    @PutMapping("/")
+    public Training updateTraining(@RequestBody TrainingDto trainingDto){
+        return trainingService.updateTraining(trainingDto);
+    }
+
+    @DeleteMapping("/{id}")
+    public void deleteTraining(@PathVariable int id){
+        trainingService.deleteTraining(id);
+    }
+
+    @PatchMapping("/{id_exercise}/{id_training}")
+    public void addExerciseToTraining(@PathVariable int id_exercise,
+                                      @PathVariable int id_training) throws Exception {
+        trainingService.addExerciseToTraining(id_exercise, id_training);
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/model/Training.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/model/Training.java
new file mode 100644
index 0000000..10ec415
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/model/Training.java
@@ -0,0 +1,41 @@
+package com.services.trainingapp.model;
+
+import jakarta.persistence.*;
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+@Entity
+@Table(name = "t_training")
+@Data
+@Accessors(chain = true)
+public class Training {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+    private String name;
+    private String description;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/modelDto/ExerciseDto.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/modelDto/ExerciseDto.java
new file mode 100644
index 0000000..aeb6540
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/modelDto/ExerciseDto.java
@@ -0,0 +1,44 @@
+package com.services.trainingapp.modelDto;
+
+import jakarta.annotation.Nullable;
+
+public class ExerciseDto {
+    private int id;
+    private String name;
+    private String description;
+    @Nullable
+    private Integer id_training;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    @Nullable
+    public Integer getId_training() {
+        return id_training;
+    }
+
+    public void setId_training(@Nullable Integer id_training) {
+        this.id_training = id_training;
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/modelDto/TrainingDto.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/modelDto/TrainingDto.java
new file mode 100644
index 0000000..0938979
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/modelDto/TrainingDto.java
@@ -0,0 +1,42 @@
+package com.services.trainingapp.modelDto;
+
+import java.util.List;
+
+public class TrainingDto {
+    private int id;
+    private String name;
+    private String description;
+    private List<ExerciseDto> exercises;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public List<ExerciseDto> getExercises() {
+        return exercises;
+    }
+
+    public void setExercises(List<ExerciseDto> exercises) {
+        this.exercises = exercises;
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/repository/TrainingRepository.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/repository/TrainingRepository.java
new file mode 100644
index 0000000..e8685d1
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/repository/TrainingRepository.java
@@ -0,0 +1,7 @@
+package com.services.trainingapp.repository;
+
+import com.services.trainingapp.model.Training;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface TrainingRepository extends JpaRepository<Training, Integer> {
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/service/TrainingService.java b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/service/TrainingService.java
new file mode 100644
index 0000000..aff8ff2
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/java/com/services/trainingapp/service/TrainingService.java
@@ -0,0 +1,130 @@
+package com.services.trainingapp.service;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.services.trainingapp.model.Training;
+import com.services.trainingapp.modelDto.ExerciseDto;
+import com.services.trainingapp.modelDto.TrainingDto;
+import com.services.trainingapp.repository.TrainingRepository;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+public class TrainingService {
+    private final TrainingRepository trainingRepository;
+
+    @Value("${exercise-service.host}")
+    private String exercise_service_host;
+
+    public TrainingService(TrainingRepository trainingRepository) {
+        this.trainingRepository = trainingRepository;
+    }
+
+    public List<TrainingDto> findAllTraining() throws Exception {
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        List<TrainingDto> trainingDtos = new ArrayList<>();
+        for (Training training : trainingRepository.findAll()) {
+            TrainingDto trainingDto = new TrainingDto();
+            trainingDto.setId(training.getId());
+            trainingDto.setName(training.getName());
+            trainingDto.setDescription(training.getDescription());
+
+            ResponseEntity<String> response = restTemplate.exchange(
+                    "http://" + exercise_service_host + "/exercise/training/" + trainingDto.getId(), HttpMethod.GET, entity, String.class);
+
+            if (response.getStatusCode().is2xxSuccessful()) {
+                String responseBody = response.getBody();
+                ObjectMapper objectMapper = new ObjectMapper();
+                List<ExerciseDto> exerciseDtos;
+                try {
+                    exerciseDtos = objectMapper.readValue(responseBody, ArrayList.class);
+                    trainingDto.setExercises(exerciseDtos);
+                } catch (JsonProcessingException e) {
+                    throw new Exception("Не удалось десериализовать тело запроса в объект");
+                }
+            } else {
+                throw new Exception("Ошибка получения объекта");
+            }
+            trainingDtos.add(trainingDto);
+        }
+        return trainingDtos;
+    }
+
+    public TrainingDto findById(int id) throws Exception {
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        TrainingDto trainingDto = new TrainingDto();
+        Training training = trainingRepository.findById(id).orElseThrow();
+        trainingDto.setId(training.getId());
+        trainingDto.setName(training.getName());
+        trainingDto.setDescription(training.getDescription());
+        ResponseEntity<String> response = restTemplate.exchange(
+                "http://" + exercise_service_host + "/exercise/training/" + trainingDto.getId(), HttpMethod.GET, entity, String.class);
+
+        if (response.getStatusCode().is2xxSuccessful()) {
+            String responseBody = response.getBody();
+            ObjectMapper objectMapper = new ObjectMapper();
+            List<ExerciseDto> exerciseDtos;
+            try {
+                exerciseDtos = objectMapper.readValue(responseBody, ArrayList.class);
+                trainingDto.setExercises(exerciseDtos);
+            } catch (JsonProcessingException e) {
+                throw new Exception("Не удалось десериализовать тело запроса в объект");
+            }
+        } else {
+            throw new Exception("Ошибка получения объекта");
+        }
+
+        return trainingDto;
+    }
+
+    public Training addTraining(TrainingDto trainingDto) {
+        Training training = new Training();
+        training.setName(trainingDto.getName());
+        training.setDescription(trainingDto.getDescription());
+        return trainingRepository.save(training);
+    }
+
+    public Training updateTraining(TrainingDto trainingDto){
+        Training training = trainingRepository.findById(trainingDto.getId()).orElseThrow();
+        training.setName(trainingDto.getName());
+        training.setDescription(trainingDto.getDescription());
+        return trainingRepository.save(training);
+    }
+
+    public void deleteTraining(int id){
+        trainingRepository.delete(trainingRepository.findById(id).orElseThrow());
+    }
+
+    public void addExerciseToTraining(int exercise_id, int training_id) throws Exception {
+        RestTemplate restTemplate = new RestTemplate();
+        HttpEntity<String> entity = new HttpEntity<>(new HttpHeaders());
+        ResponseEntity<String> response = restTemplate.exchange(
+          "http://" + exercise_service_host + "/exercise/" + exercise_id, HttpMethod.GET, entity, String.class
+        );
+
+        if (response.getStatusCode().is2xxSuccessful()) {
+            String responseBody = response.getBody();
+            ObjectMapper objectMapper = new ObjectMapper();
+            ExerciseDto exerciseDto;
+            try {
+                exerciseDto = objectMapper.readValue(responseBody, ExerciseDto.class);
+            } catch (JsonProcessingException e) {
+                throw new Exception("Не удалось десериализовать тело запроса в объект");
+            }
+            exerciseDto.setId_training(training_id);
+            restTemplate.exchange("http://" + exercise_service_host + "/exercise/", HttpMethod.PUT, new HttpEntity<>(exerciseDto), String.class);
+        } else {
+            throw new Exception("Ошибка получения объекта");
+        }
+    }
+}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/main/resources/application.yaml b/kochkareva_elizaveta_lab_3/training-app/src/main/resources/application.yaml
new file mode 100644
index 0000000..cd03cb9
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/main/resources/application.yaml
@@ -0,0 +1,9 @@
+exercise-service:
+  host: ${EXERCISE_SERVICE_HOST:localhost:8080}
+server:
+  port: "8082"
+spring:
+  datasource:
+    url: ${DATASOURCE_URL:jdbc:postgresql://localhost:5432/traininarium}
+    username: ${DATASOURCE_USERNAME:admin}
+    password: ${DATASOURCE_PASSWORD:admin}
diff --git a/kochkareva_elizaveta_lab_3/training-app/src/test/java/com/services/trainingapp/TrainingAppApplicationTests.java b/kochkareva_elizaveta_lab_3/training-app/src/test/java/com/services/trainingapp/TrainingAppApplicationTests.java
new file mode 100644
index 0000000..d7f23f7
--- /dev/null
+++ b/kochkareva_elizaveta_lab_3/training-app/src/test/java/com/services/trainingapp/TrainingAppApplicationTests.java
@@ -0,0 +1,13 @@
+package com.services.trainingapp;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class TrainingAppApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}