xxx project docker-compose file with bundle: django app, postgres, adminer (database web gui), rabbitmq, celery for worker process, flower (celery gui)

docker-compose.yml

version: "3"

services:
  rabbitmq:
    image: rabbitmq:3
    hostname: rabbit
  postgres:
    image: postgres:10
    restart: always
    environment:
      - POSTGRES_PASSWORD=123456
      - POSTGRES_DB=xxx
  adminer:
    image: adminer
    restart: always
    ports:
    - 8080:8080
  python-app:
    build: .
    volumes:
      - .:/opt/app/src
    ports:
      - 8000:8000
    env_file:
      - "dev.env"
    depends_on:
      - rabbitmq
      - postgres
    command: gunicorn --bind :8000 xxx.wsgi:application
  celery:
    build: .
    command: celery -A xxx worker -l debug
    env_file:
      - "dev.env"
    volumes:
      - .:/opt/app/src
    depends_on:
      - rabbitmq
      - postgres
  flower:
    build: .
    command: celery flower -A xxx --address=0.0.0.0 --port=5555
    volumes:
      - .:/opt/app/src
    env_file:
      - "dev.env"
    ports:
      - 5555:5555