CI: use alicloud image sync (#4567)

Author: caic99

.github/workflows/devcontainer.yml

@@ -43,7 +43,8 @@ jobs:
       - name: Login to Aliyun Registry
         uses: docker/login-action@v3
         with:
-          registry: registry.dp.tech
+          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 }}