title: Does the Docker message: "Ignoring unsupported options: restart" mean the restart policy is ignored?
body: <p>Using <code>docker stack deploy</code>, I can see the following message:</p>
  
  <pre><code>Ignoring unsupported options: restart
  </code></pre>
  
  <ul>
  <li>Does it mean that restart policies are not in place? </li>
  <li>Do they have to be specified outside the compose file?</li>
  </ul>
  
  <p>You can see this message for example with the 
  <a href="https://hub.docker.com/_/joomla/" rel="noreferrer">Joomla compose file available at the bottom of that page</a>.
  To start the compose file:</p>
  
  <pre><code>sudo docker swarm init
  sudo docker stack deploy -c stackjoomla.yml joomla
  </code></pre>