Comment 4 for bug 1652424

The whole intent of Libertine is allowing users to install and use X graphical applications in Debian package format on their Unity 8 devices. Given that is the goal, if a user wants a shell inside the container to run command line applications, then our suggestion is to install a terminal application such as Terminator or Sakura inside the container and then run that terminal application from within Unity 8.

I'm really not sure where it's documented that libertine-launch is supposed to be used to get command line access inside a container. libertine-launch was only developed as a helper application for ubuntu-app-launch to start X applications in a Libertine container (and later to launch snap applications).

As an aside, I understand power users want more control from the command line such as ssh'ing in to the device and then accessing a container from the ssh session, but honestly, that is really beyond the intended design and scope of Libertine.