chore(renovate): add dockerfile

renovate.json

@@ -59,6 +59,13 @@
         "minor",
         "patch"
       ]
+    },
+    {
+      "description": "Automatically update patch version of used container images in docker files",
+      "addLabels": [ "renovate/container-image", "renovate/automerge" ],
+      "automerge": true,
+      "matchManagers": [ "dockerfile" ],
+      "matchUpdateTypes": [ "patch" ]
     }
   ],
   "platformAutomerge": true,