Meta-header routing and forward_auth removed from the described design — both
disproved live. Documents: Host-based provider routing with per-guarded-host
proxy providers (lockstep rule), the null-flows wedge that starves the
embedded outpost config fetch, the Anubis /outpost.goauthentik.io/* transport
exemption, the single-file bind-mount stale-policy inode gotcha, Invalid next
URL as a dead design, and the public-DNS record requirement per guarded host.
The policy must ALLOW Anubis's own endpoints before the challenge-all rule
or the challenge challenges itself: browsers POST-solve via make-challenge
then GET-navigate pass-challenge, and a challenged answer renders as the
browser's own fetch-failure error page. Non-JS clients never reach the
verify step, which is why every curl probe looked green while every human
hit a wall. Also records that v1.13.0's valid action verbs are
ALLOW/CHALLENGE/DENY (ACCEPT crash-looped the unit on first deploy).
Three compounding deploy-handler bugs found by live deployment:
- podman image exists/pull used a mixed-case ghcr.io ref that podman's
reference parser rejects before any network I/O (repository name must be
lowercase); all refs now lowercase — ghcr resolves case-insensitively.
- the unit runs the image under a localhost/ alias tag: this host's podman
5.7 quadlet path fails container create with 'image not known' for
registry-prefixed refs even when present in storage (verified live).
- the health probe was shell-form and the distroless ko-build image has no
shell; HealthCmd is now a JSON exec-form array, which passes through the
quadlet generator's argv assembly verbatim.
Tests updated to assert the alias-tag reality plus the pull guard.
Frank