NewAuthProviderOIDC received a context with a 30-second timeout from
its caller, but immediately discarded it by passing context.Background()
to oidc.NewProvider. This caused both `headscale serve` and
`headscale configtest` to hang indefinitely if the OIDC issuer was
unreachable, rather than timing out and returning an error.
Fix by passing the caller's ctx to oidc.NewProvider and remove the
nolint:contextcheck annotation that was suppressing the linter warning
about this bug. The annotation was introduced in ce580f82 as part of a
bulk lint-suppression pass without addressing the underlying issue.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Fredrik Ekre
5aeeff98d0