The point is not containerization with Docker (vs. something else), but showing a project that can be used as a login shell. I.e. I think a good chunk of the ch

The point is not containerization with Docker (vs. something else), but showing a project that can be used as a login shell. I.e. I think a good chunk of the challenge was gluing everything from sshd to the running individual containers. Even if you were saying that such a login shell already exists with another containerization scheme, the fact it uses Docker is relevant to those who are investing in Docker. For instance Dockersh can be configured to run the shell in a specific Docker image; that is you can re-use your existing knowlegde and tooling.