services:
  back:
    image: alpine
    init: true
    command: sleep infinity
    depends_on:
      - db
  db:
    image: alpine
    init: true
    command: sleep infinity
    environment:
      - MAYBE
  front:
    image: alpine
    init: true
    command: sleep infinity
    deploy:
      replicas: 2
  dbadmin:
    image: alpine
    init: true
    command: sleep infinity
    deploy:
      replicas: 0