docker-compose.yml

data:
  image: gliderlabs/alpine
  command: echo Data Container
  user: 999:999
  labels:
    com.dockerinaction.chapter: "11"
    com.dockerinaction.example: "Coffee API"
    com.dockerinaction.role: "Volume Container"

dbstate:
  extends:
    file: docker-compose.yml
    service: data
  volumes:
    - /var/lib/postgresql/data/pgdata

# the postgres image uses gosu to change to the postgres user
db:
  image: postgres
  volumes_from:
    - dbstate
  environment:
    - PGDATA=/var/lib/postgresql/data/pgdata
    - POSTGRES_PASSWORD=development
  labels:
    com.dockerinaction.chapter: "11"
    com.dockerinaction.example: "Coffee API"
    com.dockerinaction.role: "Database"

# the nginx image uses user de-escalation to change to the nginx user
proxy:
  image: nginx
  restart: always
  volumes:
    - ./proxy/app.conf:/etc/nginx/conf.d/app.conf
  ports:
    - "8080:8080"
  links:
    - coffee
  labels:
    com.dockerinaction.chapter: "11"
    com.dockerinaction.example: "Coffee API"
    com.dockerinaction.role: "Load Balancer"

coffee:
  build: ./coffee
  user: 777:777
  restart: always
  expose:
    - 3000
  ports:
    - "0:3000"
  links:
    - db:db
  environment:
    - COFFEEFINDER_DB_URI=postgresql://postgres:development@db:5432/postgres
    - COFFEEFINDER_CONFIG=development
    - SERVICE_NAME=coffee
  labels:
    com.dockerinaction.chapter: "11"
    com.dockerinaction.example: "Coffee API"
    com.dockerinaction.role: "Application Logic"