With the image fixed, the API got as far as connecting and then died with
Prisma P1001 "can't reach database server". The cause is DNS, not routing.
galactus runs systemd-resolved, whose 127.0.0.53 stub is unreachable from
inside a container, so Docker falls back to the upstream resolver in
/run/systemd/resolve/resolv.conf — the LAN router, which knows nothing about
the tailnet. Verified from a probe container on galactus: resolving
galactus.tail01aa2.ts.net fails outright, while `nc 100.103.77.46 3306` is
OPEN. Only the lookup was broken.
Pin the api and web services to Tailscale's own resolver (100.100.100.100,
the same anycast address on every tailnet) with this tailnet's search suffix.
Both are overridable via TAILSCALE_DNS / TAILNET_SUFFIX. db and minio need
nothing — they make no outbound calls.
Verified end to end: the published image, unmodified, with only these DNS
settings, boots on galactus against the real database and serves
/health {"status":"ok"}
/version {"service":"api","version":"master","gitSha":"3ff56e6b..."}
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
rmancinasandClaude Opus 5
1cba9bfc32