修改docker注册文件

 cd /etc/docker/daemon.json

往里面加入

{
  "registry-mirrors": ["https://hub.xdark.top",
"https://hub.littlediary.cn",
"https://dockerpull.org",
"https://hub.crdz.gq",
"https://docker.unsee.tech",
"https://dockercf.jsdelivr.fyi",
"https://docker.jsdelivr.fyi",
"https://dockertest.jsdelivr.fyi",
"https://mirror.aliyuncs.com",
"https://dockerproxy.com",
"https://mirror.baidubce.com",
"https://docker.m.daocloud.io",
"https://docker.nju.edu.cn",
"https://docker.mirrors.sjtug.sjtu.edu.cn",
"https://docker.mirrors.ustc.edu.cn",
"https://mirror.iscas.ac.cn",
"https://docker.rainbond.cc"]
}

然后重启docker

sudo systemctl daemon-reload
sudo systemctl restart docker

通过docker info查看配置文件

docker info