whiteboard add autoupdate image

deploy/whiteboard/image-policy.yaml

@@ -0,0 +1,13 @@
+apiVersion: image.toolkit.fluxcd.io/v1
+kind: ImagePolicy
+metadata:
+  name: whiteboard
+spec:
+  imageRepositoryRef:
+    name: whiteboard
+  filterTags:
+    pattern: '^stable$'
+  policy:
+    alphabetical: {}
+  digestReflectionPolicy: Always
+  interval: 24h