netbox docker, authentik OIDC certificate error

[rattencreep]

Hello,

I am running netbox docker with Entra ID remote auth backend for some time now. I also run authentik to as local IDP and would like to switch netbox to the OIDC remote auth backend to use authentik instead of Entra. However, when I setup netbox to do so, I get a SSL certificate error:

<class 'social_core.exceptions.AuthFailed'>

Authentication failed: HTTPSConnectionPool(host='sub.domain.tld', port=443): Max retries exceeded with url: /application/o/netbox//.well-known/openid-configuration (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1000)')))

Python version: 3.12.3
NetBox version: 4.2.2
Plugins: None installed

Netbox, as well as authentik sit behind traefik, which handles all SSL certificates from my own CA.

What is the preferred way to get this setup working?

Thank you.