title: Is it a good idea to add meta data in a docker-compose file
body: <p>I plan to add meta information in my docker-compose files, but I don't know if it's possible/a good way.</p>
  
  <p>Figure this service, and the meta key:</p>
  
  <pre><code>OldMongoDB:
    image: mongo:3.2
    environment:
      - URL: mongodb://localhost:27015
    ports:
      - "27015:27017"
    meta:
      - meta1: "some value usefull in tests"
      - meta2: "other value usefull in tests"
  </code></pre>
  
  <p>Is it good for you to store additional values inside a docker-compose? 
  This is to be used by test scripts. </p>