re-add regex matcher

renovate.json

@@ -1,3 +1,15 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "regexManagers": [
+    {
+      "fileMatch": [
+        "ansible-test.yml",
+        "Containerfile"
+      ],
+      "matchStrings": [
+        "# renovate: datasource=(?<datasource>.*?) (versioning=(?<versioning>.*?))\n.*_image: (?<depName>.*?):(?<currentValue>.*?)$"
+      ],
+      "versioningTemplate": "{{#if versioning}}{{{versioning}}}{{else}}semver{{/if}}"
+    }
+  ]
 }