Neat! 👌 I have been hacking on sshbox and refactored it a fair bit to have much more flexible auth methods. In addition I also toyed around with the idea of having a shared (free) unix environment like some of the ones around (whose name eludes me right now 🤦‍♂️), with a couple of key differences and differentiators:

• The environment you get is actually a Docker container
  
• Based on Alpine, but customized.
  
• Can persist/detach any background processes you want.
  
• And reverse proxy to port 8000 in the container.