添加公开的docker加速代理(可能会失效)：

vim /etc/docker/daemon.json

{"registry-mirrors":["https://docker.mirrors.sjtug.sjtu.edu.cn","https://docker.m.daocloud.io","https://noohub.ru","https://huecker.io","https://dockerhub.timeweb.cloud", "https://registry.cn-hangzhou.aliyuncs.com"]}

重新加载配置文件

systemctl daemon-reload

重启Docker服务

systemctl restart docker