title: Dokku refusing deployment on second app
body: <p>I have made two dokku apps in Ubuntu virtual machine on Azure using <code>dokku apps:create appname</code></p>
  
  <pre><code>$dokku apps
  =====&gt; My Apps
  api
  frontend
  </code></pre>
  
  <p>I can successfully deploy to the first one, but not to the other:</p>
  
  <p><code>git push dokku@myserver.com:api</code> suceeds, but</p>
  
  <p><code>git push dokku@myserver.com:frontend</code> fails with</p>
  
  <pre><code>fatal: 'frontend' does not appear to be a git repository
  fatal: Could not read from remote repository.
  
  Please make sure you have the correct access rights
  and the repository exists.
  </code></pre>
  
  <p>What could cause this?</p>