🔨 Add renovate_docker_user_group

defaults/main.yml

@@ -10,4 +10,5 @@ renovate_platform: gitea
 renovate_github_token: ""
 renovate_log_level: info
 renovate_bot_username: renovate-bot
-renovate_webhook_secret: ""
+renovate_webhook_secret: ""
+renovate_docker_user_group: "0:0"

templates/renovate-config.js.j2

@@ -4,6 +4,7 @@ module.exports = {
     endpoint: '{{ renovate_git_endpoint }}',
     token: '{{ renovate_git_token }}',
     platform: '{{ renovate_platform }}',
+    dockerUser: "{{ renovate_docker_user_group }}",
     autodiscover: true,
     onboardingConfig: {
       extends: ['config:base'],