chore(workflows): 优化Docker构建工作流配置

- 移除不必要的docker守护进程配置步骤
- 直接使用docker setup-buildx-action设置buildx插件
- 更新buildx驱动和选项配置为docker-container模式
- 清理冗余空行，提升配置文件简洁性

.gitea/workflows/docker.yml

@@ -11,20 +11,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - name: Configure Docker for insecure registry
-        run: |
-          mkdir -p /etc/docker
-          cat > /etc/docker/daemon.json << 'EOF'
-          {
-            "insecure-registries": ["192.168.100.120:8418"]
-          }
-          EOF
-          pkill -HUP dockerd || true
-          sleep 3
-
       - name: Set up Docker Buildx
-      - uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v3
         with:
           driver: docker-container
           driver-opts: image=moby/buildkit:latest
@@ -33,7 +21,6 @@ jobs:
             [registry."192.168.100.120:8418"]
               http = true
               insecure = true
-
       - name: Cache Docker layers
         uses: actions/cache@v4
         with: