My use case: internally in $corp, we have a production setup with okta, ad, ldap etc and whatnot. But there is also a lab. Currently the level of auth for highest privileged user is a password and username that hasn't changed since 1998 - when the company was founded. I was gathering all open source projects out there that could be used als Identity provider and support assigning roles. A little bit of coding in go to glue everything together would not be an issue. Being able to run the service as a classic systemd service and not being hardcoded to docker counts as a huge benefit.