title: How to run tmux inside a docker container?
body: <p>I have some docker container running on a P2 instance.
  In the past I run tmux in the P2 instance a run a docker container inside.
  Afterwards I used </p>
  
  <pre><code>docker exec -it 
  </code></pre>
  
  <p>to get into the running docker container.
  I would like to avoid the above and be able to run tmux inside an existing container. hitting </p>
  
  <pre><code>tmux new -s &lt;some name&gt;
  </code></pre>
  
  <p>Doesn't do anything.</p>