How to use avatarUrlFormat with Authentik OpenID?

[ZackosProg]

Hi there!
I'm running Jellyfin 10.10.7 in a container, alongside Authentik on the same host and docker network. Both are behind SWAG as a reverse proxy.

I've configured OpenID Connect successfully with Authentik, and everything is working great!

I read in the README that it's possible to set a custom avatar using the avatarUrlFormat option, which can reference OIDC claims using the @{claim} syntax. However, I haven't been able to find where or how to configure this value, either through the UI.

Is there a way to pass a user avatar from Authentik and have Jellyfin use it via this plugin? Any guidance on how to configure avatarUrlFormat properly would be greatly appreciated.

Thanks in advance for your help!

[9p4]

Refer to the PR for more info: #202