version: "2"
   services:
      db:
       image: mysql:5.7
      volumes:
       - db_data:/var/lib/mysql
      restart: always
      environment:
          MYSQL_ROOT_PASSWORD: root2017
          MYSQL_DATABASE: dbname
          MYSQL_USER: Dbuser
          MYSQL_PASSWORD: passw
 grails:
   depends_on:
     - db
   ports:
     - "9001:9001"
   restart: always
   environment:
     DB_HOST: db:3306
     DB_PASSWORD: passw
volumes:
    db_data: