Fix: Add condition to login to Aliyun Registry only for non-forked PRs

Author: sunliang98

.github/workflows/devcontainer.yml

@@ -44,10 +44,11 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Login to Aliyun Registry
+        # 只有在不是由 fork 的 PR 触发时才执行
+        if: github.event.pull_request.head.repo.full_name == github.repository
         uses: docker/login-action@v3
         with:
           registry: dp-harbor-registry.us-east-1.cr.aliyuncs.com
-            # AliCloud automatically mirrors to registry.dp.tech
           username: ${{ secrets.DP_HARBOR_USERNAME }}
           password: ${{ secrets.DP_HARBOR_PASSWORD }}