diff --git a/renovate.json b/renovate.json
index 4ecf721..ebacc22 100644
--- a/renovate.json
+++ b/renovate.json
@@ -5,6 +5,18 @@
   "labels": [
     "ready for review"
   ],
+  "customManagers": [
+        {
+          "customType": "regex",
+          "fileMatch": [
+            "(^|/|\\.)([Dd]ocker|[Cc]ontainer)file$",
+            "(^|/)([Dd]ocker|[Cc]ontainer)file[^/]*$"
+          ],
+          "matchStrings": [
+            "# renovate: datasource=(?<datasource>[a-zA-Z0-9-._]+?) depName=(?<depName>[^\\s]+?)(?: (lookupName|packageName)=(?<packageName>[^\\s]+?))?(?: versioning=(?<versioning>[^\\s]+?))?(?: extractVersion=(?<extractVersion>[^\\s]+?))?(?: registryUrl=(?<registryUrl>[^\\s]+?))?\\s(?:ENV|ARG)\\s+[A-Za-z0-9_]+?_VERSION[ =][\"']?(?<currentValue>.+?)[\"']?\\s"
+          ]
+        }
+      ],
   "ignoreUnstable": true,
   "minimumReleaseAge": "3",
   "packageRules": [