title: How to enter in a Docker container already running with a new TTY
body: <p>I have a container that is running the Apache service in the foreground. I would like to be able to access the container from another shell in order to "poke around" inside it and examine the files. At the moment, if I attach to the container, I am left looking at the Apache daemon and cannot run any commands.</p>
  
  <p>Is it possible to attach another tty to a running container? Possibly, I can take advantage of the fact that Docker is actually just wrapping around LXC containers? I have tried <code>sudo lxc-console -n [container-id] -t [1-4]</code> but it appears that only one tty is made available and that is the one running the apache daemon. Perhaps there is a way to enable multiple lxc consoles during the build?</p>
  
  <p>I would rather <strong>not</strong> configure and build the container with an openssh service if possible.</p>