fix(docker): point healthcheck at /api/regions (#4)

The /api/bundeslaender route was removed in the country/region refactor
(PR #3). The Dockerfile HEALTHCHECK still hit it, so the container was
flagged unhealthy and Traefik dropped it from the load balancer pool —
the public site started returning Traefik's default 404.

The production compose (managed via the ansible role) overrides this
healthcheck with the same stale URL; that needs the matching fix in the
ansible repo.

Co-authored-by: haex <mail@haex.space>

Author: haexhub

Dockerfile

@@ -39,6 +39,6 @@ USER node
 EXPOSE 3000
 
 HEALTHCHECK --interval=30s --timeout=10s --start-period=20s --retries=3 \
-    CMD wget -qO- http://localhost:3000/api/bundeslaender > /dev/null || exit 1
+    CMD wget -qO- http://localhost:3000/api/regions > /dev/null || exit 1
 
 CMD ["node", ".output/server/index.mjs"]