Docker: Next an alle Interfaces binden fuer Healthcheck

entrypoint.sh

@@ -2,4 +2,7 @@
 set -e
 # Läuft bereits als node (USER node im Image): keine root-Rechte nötig.
 mkdir -p "${DATA_DIR:-/app/data}" "${BACKUPS_DIR:-/app/backups}"
+# Docker injects the container hostname; Next.js would bind only to its IP,
+# making the in-container 127.0.0.1 health check fail. Listen on all interfaces.
+export HOSTNAME="${APP_HOSTNAME:-0.0.0.0}"
 exec "$@"