services:
  postgres:
    image: postgres:15
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
    ports:
      - "5432:5432"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 5s
      retries: 5
  
  pg-instance-handler:
    build:
      context: .
      dockerfile: Dockerfile
    depends_on:
      postgres:
        condition: service_healthy
    environment:
      DATABASE_URL: postgres://postgres:postgres@postgres:5432/postgres
    ports:
      - "8080:8080"
    volumes:
      - ./database.txt:/database.txt:ro