Как связать несколько docker-compose проектов по http между собой?

version: '2.0'
services:
  web:
    container_name: meraki_web
    build:
      context: ./
      dockerfile: web.docker
    volumes:
      - ./:/var/www
    ports:
      - "8081:80"
    links:
      - app
    networks:
      wizzardnet:
        aliases:
          - mweb.wizzardnet
  app: 
...
networks:
  wizzardnet:
    external:
      name: foobar

$ docker-compose up -d
meraki_db is up-to-date
meraki_app is up-to-date
Recreating meraki_web

$ docker-compose up -d
meraki_db is up-to-date
meraki_app is up-to-date
Starting meraki_web