add ubi automerge

renovate.json

@@ -1,5 +1,14 @@
 {
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "github>acend/hugo-training-template"
+  ],
+  "packageRules": [
+    {
+      "description": "Automerge UBI example Dockerfiles",
+      "matchPackagePatterns": ["registry.access.redhat.com/ubi8/ubi*"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "automerge": true
+    }
   ]
 }