renovate fix

renovate.json

@@ -2,12 +2,27 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": ["config:recommended"],
   "schedule": ["before 6am on Monday"],
+  "customManagers": [
+    {
+      "customType": "regex",
+      "fileMatch": ["\\.github/workflows/[^.]+\\.ya?ml$"],
+      "matchStrings": ["node-version:\\s*['\"]?(?<currentValue>\\d+)['\"]?"],
+      "datasourceTemplate": "docker",
+      "depNameTemplate": "node"
+    }
+  ],
   "packageRules": [
     {
       "matchManagers": ["github-actions"],
       "groupName": "GitHub Actions",
       "automerge": true
     },
+    {
+      "matchDatasources": ["docker"],
+      "matchDepNames": ["node"],
+      "groupName": "Node.js",
+      "automerge": false
+    },
     {
       "matchManagers": ["dockerfile"],
       "groupName": "Docker",