Replace the hard exit 1 in the `Fetch GeoLite2 databases` step with a
`::warning::` line plus a `.empty` marker in `assets/geolite2/`. The
Dockerfile COPY still has a non-empty source, the build continues, and
the runtime detection layer (next commit) picks up the marker on first
geo lookup and emits a one-shot admin notification. The maintainer is
no longer forced to wire `MAXMIND_LICENSE_KEY` before every release.
`scripts/fetch-geolite2.sh` mirrors the same behaviour: when the key is
unset it drops the marker and exits 0 cleanly; when the key is present
it clears any stale marker before downloading so a freshly populated
directory is not misread as the fallback state.
Rewrites src/lib/geo.ts so lookupIpLocation reads from the bundled
MaxMind GeoLite2-City MMDB first and falls back to the existing
ipwho.is path only for IPs the offline DB cannot resolve. Adds a
sibling lookupIpAsn that returns { asn, carrier } from the
GeoLite2-ASN MMDB so the admin login-overview can grow a carrier
chip alongside the auth-provider chip.
The MMDB files are too large to vendor in git. scripts/fetch-geolite2.sh
downloads them at build time using a MaxMind license key; the
Dockerfile copies assets/geolite2/ into /opt/geolite2/. When the
license key is absent or the files are missing the image still
builds and the resolver falls back to ipwho.is (v1.4.26 behaviour).
GeoLite2 is CC BY-SA 4.0 — attribution lives on the new public
/about page and in docs/audit/v1427-summary.md.
Marc-André Bombeck