services:
  postgres:
    image: postgres:18-alpine
    container_name: postgres18
    restart: unless-stopped
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    volumes:
      - postgres_data:/var/lib/postgresql/data
    networks:
      - web

volumes:
  postgres_data:

networks:
  web:
    external: true