Console.WriteLine("Запущен первый сервис");
string inputPath = Environment.GetEnvironmentVariable("INPUT_PATH") ?? "./input1";
string outputPath = Environment.GetEnvironmentVariable("OUTPUT_PATH") ?? "./output1";

if (!Directory.Exists(inputPath))
    Directory.CreateDirectory(inputPath);

if (!Directory.Exists(outputPath))
    Directory.CreateDirectory(outputPath);

var file = new DirectoryInfo(inputPath).EnumerateFiles().Aggregate((x, y) => x.Length > y.Length ? x : y);

var outputFilePath = Path.Combine(outputPath, "data.txt");

if(File.Exists(outputFilePath))
    File.Delete(outputFilePath);
File.Move(file.FullName, Path.Combine(outputPath, "data.txt"));