version: '2'
services:
  web:
    build:
      context: .
      dockerfile: Dockerfile.dev
    ports:
      - '80:80'
    volumes:
      - '.:/usr/src/app'
    volumes_from:
      - gem_cache
    expose:
      - '3001'
    stdin_open: true
    tty: true
    command: bundle exec rails s -p 80 -b '0.0.0.0'
    depends_on:
      - gem_cache
  gem_cache:
    image: ruby:2.3.1
    command: bin/true
    volumes:
      - /usr/local/bundle