Add image update automation diagram

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

docs/components/image/controller.md

@@ -8,6 +8,8 @@ repository when new container images are available.
 - The image-automation-controller updates YAML files based on the latest images scanned, and commits
   the changes to a given Git repository.
 
+![](../../_files/image-update-automation.png)
+
 Links:
 
 - Source code [fluxcd/image-reflector-controller](https://github.com/fluxcd/image-reflector-controller)