title: how to run docker exec on a docker-compose.yml
body: <p>I am trying to create a mysql database schema during the docker-compose.yml file is getting executed </p>
  
  <pre><code>  version: "2"
    services:
    web:
      build: docker
      ports:
        - "8080:8080"
  
    environment:
      - MYSQL_ROOT_PASSWORD=root
  
     mysql:
     image: mysql:latest
      environment:
       - MYSQL_ROOT_PASSWORD=root
       - MYSQL_DATABASE=test
  
       ports:
        - "3306:3306"
     links:
      - web
  
   onrun:
   command: "docker exec -i test_mysql_1 mysql -uroot -proot test &lt;dummy1.sql"
  </code></pre>
  
  <p>I tried onrun but this is not working .
  i am building the first image but pulling the second image from the docker hub.
  kindly help in how to execute the following command after the docker-compose up </p>