The override pointed at a v1-era node /app/extra/healthcheck.mjs that does not
exist in louislam/uptime-kuma:2, so the container was permanently unhealthy and
Traefik withheld the route → the app URL 404'd despite the app running. Point at
the correct binary (extra/healthcheck, WORKDIR /app) and use the image's timing
(180s start_period) to avoid transient unhealthy→404 on first boot.
All 51 docker-compose.yml: replaced hardcoded subdomain.${DOMAIN}
with ${SUBDOMAIN}.${DOMAIN} in Traefik labels, app env vars, and
comments.
All 51 .felhom.yml: added SUBDOMAIN deploy field (type: subdomain)
with default matching existing subdomain metadata value.
Works with felhom-controller v0.27.0 which validates and stores the
user-chosen subdomain in app.yaml. Existing deployed apps get
SUBDOMAIN auto-injected via InjectMissingFields() on next sync.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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