fix: 优化阿里云镜像仓库认证配置

- 使用上海地区标准镜像仓库地址
- 添加 Docker 认证验证步骤
- 启用详细的构建日志输出
- 尝试解决认证服务器不匹配问题

.gitea/workflows/deploy-backend.yml

@@ -10,7 +10,7 @@ on:
   workflow_dispatch:
 
 env:
-  REGISTRY: crpi-b4fqtfbvv583enk2.cn-shanghai.personal.cr.aliyuncs.com
+  REGISTRY: registry.cn-shanghai.aliyuncs.com
   IMAGE_NAME: photography-backend/photography
 
 jobs:
@@ -66,6 +66,13 @@ jobs:
             type=sha,prefix={{branch}}-
             type=raw,value=latest,enable={{is_default_branch}}
 
+      - name: 🔐 验证 Docker 认证
+        run: |
+          echo "验证 Docker 认证状态..."
+          docker info | grep -A 10 "Registry:" || true
+          echo "测试镜像仓库连接..."
+          docker pull ${{ env.REGISTRY }}/hello-world:latest || echo "拉取测试镜像失败（正常）"
+
       - name: 🏗️ 构建并推送镜像
         uses: docker/build-push-action@v5
         with:
@@ -79,6 +86,8 @@ jobs:
           cache-to: type=gha,mode=max
           provenance: false
           sbom: false
+        env:
+          BUILDKIT_PROGRESS: plain
 
       - name: 📦 同步配置文件
         run: |