ci: change renovate config to group custom manager rules

renovate.json

@@ -14,7 +14,8 @@
       "matchStrings": [
         "#\\s*renovate:\\s*datasource=(?<datasource>.*?) depName=(?<depName>.*?)\\s+appVersion:\\s*[\"']?(?<currentValue>[^\"'\\s]+)[\"']?"
       ],
-      "datasourceTemplate": "github-releases"
+      "depNameTemplate": "your-registry/your-image",
+      "datasourceTemplate": "docker"
     }
   ],
   "timezone": "US/Central",
@@ -70,7 +71,8 @@
       "matchManagers": [
         "custom.regex", "helm-values"
       ],
-      "groupName": "docker-custom-updates",
+      "groupName": "{{{depName}}}",
+      "groupSlug": "sync-{{#if packageName}}{{{packageName}}}{{else}}{{{depName}}}{{/if}}",
       "addLabels": [
         "image"
       ],
@@ -88,7 +90,8 @@
       "matchManagers": [
         "custom.regex", "helm-values"
       ],
-      "groupName": "docker-custom-automerge",
+      "groupName": "{{{depName}}}",
+      "groupSlug": "sync-{{#if packageName}}{{{packageName}}}{{else}}{{{depName}}}{{/if}}",
       "addLabels": [
         "image",
         "automerge"