Fix Auto Docker workflow failing on pull requests

The publish workflow bumps VERSION, pushes commits/tags, and publishes
images. It must not run on pull_request events where checkout is a
detached HEAD and git push fails. PR validation is already covered by ci.yml.

Co-authored-by: truewhile <truewhile@users.noreply.github.com>

.github/workflows/Auto-docker-publish.yml

@@ -4,9 +4,7 @@ name: AuTo Docker Image
 on:
   push:
     branches: [main]
-  pull_request:
-    branches: [main]
-  
+
   # 保留手动触发作为备选
   workflow_dispatch:
     inputs: