title: docker start <container ID> doesn't do anything
body: <p>If I spin up a Docker container with:</p>
  
  <pre><code>docker run -it ubuntu /bin/bash
  </code></pre>
  
  <p>and then exit. I can see the container using </p>
  
  <pre><code>docker ps -a
  </code></pre>
  
  <p>However, if I try and restart the container with </p>
  
  <pre><code>docker start &lt;container ID&gt;
  </code></pre>
  
  <p>I just get  echoed back and returned to the command prompt.</p>
  
  <p>What am I missing?</p>