Docker compose for databases

databases docker-compose.yml

postgresql:
  image: postgres:9.4
  volumes_from:
    - postgres
  ports:
    - "127.0.0.1:5432:5432"
  hostname: postgres
  restart: always
  tty: true

mysql:
  image: mysql:5.6
  volumes_from:
    - mysql-server
  ports:
    - "127.0.0.1:3306:3306"
  hostname: mysql
  restart: always
  tty: true