add healthcheck for whiteboard

Signed-off-by: Simon L. <szaimen@e.mail.de>

Containers/whiteboard/Dockerfile

@@ -1,4 +1,5 @@
 # syntax=docker/dockerfile:latest
+# Probably from this file: https://github.com/nextcloud/whiteboard/blob/main/Dockerfile
 FROM ghcr.io/nextcloud-releases/whiteboard:v1.0.4
 
 USER root
@@ -8,6 +9,9 @@ RUN set -ex; \
 USER 65534
 
 COPY --chmod=775 start.sh /start.sh
+COPY --chmod=775 healthcheck.sh /healthcheck.sh
+
+HEALTHCHECK CMD /healthcheck.sh
 
 ENTRYPOINT ["/start.sh"]
 

Containers/whiteboard/healthcheck.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+nc -z "$REDIS_HOST" 6379 || exit 0
+nc -z 127.0.0.1 3002 || exit 1

php/containers.json

@@ -874,6 +874,14 @@
       "image": "nextcloud/aio-whiteboard",
       "user": "65534",
       "init": true,
+      "healthcheck": {
+        "start_period": "0s",
+        "test": "/healthcheck.sh",
+        "interval": "30s",
+        "timeout": "30s",
+        "start_interval": "5s",
+        "retries": 3
+      },
       "expose": [
         "3002"
       ],