[Feature]: use username (or any other attribute from the provider) in basic auth header instead of the ID

[netchild]

Motivation

The request is to have an option which puts the username from the provider (e.g. keycloak-oidc), or more generic an attribute from the provider, which can be "username", "email" or whatever instead of the ID into the username field of the http auth.

Issue:
I want to protect an application with a simple user auth / access model. It uses http auth. The username inside the http auth is displayed after login. Keycloak provides an UUID instead of a name for the username in the http auth.

I can successfully use oauth2-proxy with this application (with a generic http auth pw), but it displays what keycloak calls "ID" (looks like an UUID), and not the username. Inside the application I can manage access to parts of the application, but I would have to use the ID instead of the username to do that. This means I have to do some cross referencing to know who is who instead of simply getting/knowing the username.

Possible solution

No response

Provider

None