7.5 Compose file — one stack, one up

# compose.yaml — badge API lab stack (example)
services:
  db:
    image: postgres:16
    volumes:
      - badge-api_pgdata:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    networks:
      - badge-api_net
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 5s
      retries: 5

  api:
    build: .
    ports:
      - "8080:8080"
    environment:
      DATABASE_URL: postgres://postgres:${POSTGRES_PASSWORD}@db:5432/postgres
      APP_ENV: lab
    depends_on:
      db:
        condition: service_healthy
    networks:
      - badge-api_net

volumes:
  badge-api_pgdata:

networks:
  badge-api_net: