title: Docker run normally but docker ps show nothing
body: <p><code>docker run</code> not working on my machine (Ubuntu 16.04).</p>
  
  <p><a href="https://i.stack.imgur.com/wWVbu.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/wWVbu.jpg" alt="enter image description here"></a></p>