respect users specified pgid/puid

docker/dockerfile

@@ -27,7 +27,7 @@ RUN mkdir ./data
 # ⭐ Main Image
 ############################################
 FROM $BASE_IMAGE AS release
-USER node
+COPY ./docker/scripts/init.sh /usr/bin/init.sh
 WORKDIR /app
 
 LABEL org.opencontainers.image.source="https://github.com/louislam/uptime-kuma"
@@ -40,7 +40,7 @@ COPY --chown=node:node --from=build /app /app
 EXPOSE 3001
 HEALTHCHECK --interval=60s --timeout=30s --start-period=180s --retries=5 CMD extra/healthcheck
 ENTRYPOINT ["/usr/bin/dumb-init", "--"]
-CMD ["node", "server/server.js"]
+CMD ["/usr/bin/init.sh"]
 
 ############################################
 # Rootless Image

docker/scripts/init.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+PUID=${PUID:-1000}
+PGID=${PGID:-1000}
+
+groupmod -o -g "$PGID" node
+usermod -o -u "$PUID" node
+
+echo "node has uid: $(id -u node) and gid: $(id -g node)"
+echo "dropping to node user"
+
+exec sudo -u node node server/server.js