docker-compose.yml

webapp:
  build: "."
  ports:
    - 3000:3000
  volumes:
    - ".:/usr/src/app"
  working_dir: "/usr/src/app"
  command: bundle exec rails s -b '0.0.0.0'
  environment:
    - DATABASE_URL=postgresql://postgres:mysecretpassword@db/
  links:
    - db:db
db:
  image: postgres
  volumes_from:
    - data
  environment:
    - POSTGRES_PASSWORD=mysecretpassword
data:
  image: busybox
  volumes:
    - "/var/lib/postgresql"