alt Hacker NewsI don't know any scenario where I'd need any of that, but I love such things regardless.
About git.kontain.me - what if I'd like to setup my own copy of such a service and would like it to work with a non-public git repo, how to pass credentials? Since you support only cloning over https (btw, why not over ssh as well?) - one could use an URL of format user:pass@host:port/path/to/repo, would that work?
Unfortunately due to the limitations of a valid image ref you can't include creds like that.
You can fork the registry and include your own creds in the backend when it pulls the repo though.