services:
  app:
    environment:
      DATABASE_URL: postgresql://${POSTGRES_USER:-appuser}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-appdb}
    depends_on:
      db:
        condition: service_healthy

  db:
    image: postgres:16-alpine
    environment:
      POSTGRES_DB: ${POSTGRES_DB:-appdb}
      POSTGRES_USER: ${POSTGRES_USER:-appuser}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required for self-hosted mode}
    volumes:
      - postgres_data:/var/lib/postgresql/data
    restart: unless-stopped
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-appuser} -d ${POSTGRES_DB:-appdb}"]
      interval: 5s
      timeout: 5s
      retries: 10

volumes:
  postgres_data: