docker healthcheck: check that noVNC is reachable (and node running)

Dockerfile

@@ -93,8 +93,8 @@ ENV DEPTH=24
 # Show browser instead of running headless
 ENV SHOW=1
 
-# mega-linter (KICS, Trivy) complained about it missing - usually this checks some API endpoint, for a container that runs ~1min a healthcheck doesn't make that much sense since playwright has timeouts for everything. Could react to SIGUSR1 and actually check something - for now we just check that node is running...
+# mega-linter (KICS, Trivy) complained about it missing - usually this checks some API endpoint, for a container that runs ~1min a healthcheck doesn't make that much sense since playwright has timeouts for everything. Could react to SIGUSR1 and check something in JS - for now we just check that node is running and noVNC is reachable...
-HEALTHCHECK --interval=10s --timeout=5s CMD pgrep node
+HEALTHCHECK --interval=5s --timeout=5s CMD pgrep node && curl --fail http://localhost:6080 || exit 1
 
 # Script to setup display server & VNC is always executed.
 ENTRYPOINT ["docker-entrypoint.sh"]

docker-compose.yml

@@ -4,9 +4,9 @@ services:
     container_name: fgc # is printed in front of every output line
     image: ghcr.io/vogler/free-games-claimer # otherwise image name will be free-games-claimer-free-games-claimer
     build: .
-    healthcheck: # not that useful, but linter complained, see Dockerfile
+    healthcheck: # see Dockerfile, check that node is running and noVNC is reachable
-      test: "pgrep node"
+      test: pgrep node && curl --fail http://localhost:6080 || exit 1
-      interval: 10s
+      interval: 5s
       timeout: 5s
     ports:
       # - "5900:5900" # VNC server