Neat! I might give it a try.

What do you mean by interfaces in "These interfaces can do literally anything on the host machine. You're responsible for your own security"?

Also, your backdooring image links to a 404.

The prompts contain e.g. a terminal UI, which gives you root access to the machine. If someone can access that UI and its backend, the can do whatever they want! So make sure to put it behind a firewall or basic auth or something else.