I am using vouch-proxy as it is a very simple addon that lets me use my existing OpenID Connect compatible IDP for authentication on anything fronted by Nginx.

I am using vouch-proxy as it is a very simple addon that lets me use my existing OpenID Connect compatible IDP for authentication on anything fronted by Nginx. This works really well for services not really designed to have their own auth. The only downside is that it seems to require a second DNS entry for the vouch portion of the process. Awkward configuration in some ways. But, the price is right, and the Nginx config is reasonably clean once you understand what it's doing.