Leveraging Authelia for OIDC Single Sign-On (SSO) with Headscale

cross-posted from: https://infosec.pub/post/28466166

If you've followed any of my self-hosted headscale with Podman series, I wrote up another "bonus" post talking about OIDC configuration with Authelia. Took some trial and error, so I figured I'd document it in the public notebook.