docker-compose.yml

version: '3.3'
services:
  rabbit:
    hostname: rabbit
    image: rabbitmq:latest
    environment:
      - RABBITMQ_DEFAULT_USER=admin
      - RABBITMQ_DEFAULT_PASS=mypass
    ports:
      - "5673:5672"
    networks:
      gravity_nw:
        ipv4_address: 172.20.0.2

  flaskapp:
    hostname: flaskapp
    image: flaskapp
    build:
      context: .
      dockerfile: flaskapp.Dockerfile
    links:
      - rabbit
    depends_on:
      - rabbit
      - mongo
    networks:
      gravity_nw:
        ipv4_address: 172.20.0.4
    environment:
      GRAVITY_VAR_DIR: /var/cache/gravity
      PYTHONUNBUFFERED: 1
      CELERY_BROKER_URL: pyamqp://admin:mypass@rabbit:5672
      CELERY_RESULT_BACKEND: mongodb://mongo:27017
      CELERY_MONGODB_BACKEND_DATABASE: gravity
      CELERY_MONGODB_BACKEND_COLLECTION: results
    volumes:
      - /var/cache/gravity:/var/cache/gravity

  worker:
    hostname: worker
    image: worker
    build:
      context: .
      dockerfile: worker.Dockerfile
    links:
      - rabbit
    depends_on:
      - rabbit
      - mongo
    networks:
      gravity_nw:
        ipv4_address: 172.20.0.5
    environment:
      GRAVITY_VAR_DIR: /var/cache/gravity
      PYTHONUNBUFFERED: 1
      CELERY_BROKER_URL: pyamqp://admin:mypass@rabbit:5672
      CELERY_RESULT_BACKEND: mongodb://mongo:27017
      CELERY_MONGODB_BACKEND_DATABASE: gravity
      CELERY_MONGODB_BACKEND_COLLECTION: results
    volumes:
      - /var/cache/gravity:/var/cache/gravity

  mongo:
    hostname: mongo
    image: mongo:latest
    ports:
      - "27018:27017"
    networks:
      gravity_nw:
        ipv4_address: 172.20.0.3

networks:
  gravity_nw:
    driver: bridge
    ipam:
      config:
        - subnet: 172.20.0.0/16