name: etl-and-db

services:
  db:
    container_name: postgres_db
    image: postgres:18.0-trixie
    networks:
      - backend
    expose:
      - "5432"
    ports:
      - "8081:5432"
    shm_size: 128mb
    environment:
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - POSTGRES_USER=${DB_USER}
      - POSTGRES_DB=${DB_NAME}
    volumes:
      - postgres_data:/var/lib/postgresql
    healthcheck:
      test: ["CMD", "pg_isready", "-U", "etl_agent", "-d", "LMS-Test"]
      interval: 30s
      retries: 3
      start_period: 30s
      timeout: 10s
    restart: always
  
  etl:
    image: etl-pipeline:0.3
    depends_on:
      - db
    networks:
      - backend
    command: "python3 ./src/orchestrator.py"
    restart: no
    volumes:
      - postgres_data:/var/lib/etl
    pre_stop:
      - command: docker cp CONTAINER:/var/lib/etl/lms-etl.log /tmp/app_logs

networks:
  backend:
    name: pg_network

volumes:
  postgres_data: