title: Permission for volumes in docker-compose
body: <p>I want create docker-containers with volumes and custom group. But faced with mistake with permission inside container. All file is have for example 'custom-group' and work fine, but the Document folder is have by default root group. I think this due to volumes. How to Document folder set 'custom-group'. My code is below</p>
  
  <pre><code>volumes:
    - /base/documents:/app/documents:rw
  </code></pre>