docker-stack.yml

version: "3"

networks: 
  nw01: 
    driver: overlay

volumes: 
  db-data:

services:
  vote: 
    image: schoolofdevops/vote:movies
    links: 
      - redis:redis
    ports: 
      - 80
    networks: 
      - nw01
    depends_on: 
      - redis
    deploy: 
      replicas: 8
      update_config:
        parallelism: 2
        delay: 20s

  redis: 
    image: redis:alpine
    networks: 
      - nw01

  worker: 
    image: schoolofdevops/vote-worker
    links: 
      - redis:redis 
    networks:
      - nw01
    depends_on:
      - redis

  db: 
    image: postgres:9.4
    networks: 
      - nw01
    volumes: 
      - db-data:/var/lib/postgresql/data
    
  result: 
    image: schoolofdevops/vote-result
    ports: 
      - 5001:80
    networks: 
      - nw01
    depends_on:
      - db
    deploy: 
      replicas: 4
      update_config:
        parallelism: 1
        delay: 20s