主要的问题大概是我的两台电脑连到了一个交换机，交换机再连到路由器，导致dns出问题
内容故障现象
Error response from daemon: Get https://registry.cn-hangzhou.aliyuncs.com/v2/: dial tcp: lookup registry.cn-hangzhou.aliyuncs.com: no such host
解决方法：
vim /etc/resolv.conf #nameserver 127.0.0.53 nameserver 223.5.5.5 options edns0
把默认的dns设置改为阿里云的dns，保存即生效
docker pull IMAGE:version ... ffe240a3dce3: Already exists 2ddf521b57cf: Already exists 570bf33478f0: Pull complete Digest: sha256:ed92bdc4ed598e7c2c130f4301c907e5e3bfe8f3e16ffcd90bf83e1368e5b941
