Jupyter redirect uri error with Keycloak

I’m trying to authenticate in an external service using Keycloak from my main Jupyter notebook.

I’ve run this locally and everything works, but when I try to launch this on Binder, I can’t manage to get the redirect_uri parameter that I need to Jupyter (e.g. when run locally, I used http://localhost:8888/callback/).

I’ve tried multiple combinations of mybinder.org, etc. but I can’t find the url that I need.

Any ideas? Thanks!