title: Docker exec command without the container ID
body: <p>How can do something like: </p>
  
  <pre><code>docker exec -it 06a0076fb4c0  install-smt
  </code></pre>
  
  <p>But use the name of the container instead</p>
  
  <pre><code>docker exec -it container/container  install-smt
  </code></pre>
  
  <p>I am running a build on CI server so I can not manually input the container ID.</p>
  
  <p>How can I achieve this?</p>