打包遇到无法访问外网资源，直接配置国内镜像地址

 

直接加入如下代码就行：

{"builder": {"gc": {"defaultKeepStorage": "20GB","enabled": true}},"experimental": false,"registry-mirrors": ["https://daocloud.io","https://hub.xdark.top","https://hub.littlediary.cn","https://dockerpull.org"]
}