1. 打开daemon.json文件

sudo mkdir -p /etc/docker
vim /etc/docker/daemon.json

2. 然后在里面加入下面的配置

{
 "registry-mirrors" : ["https://docker.registry.cyou",
"https://docker-cf.registry.cyou",
"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",
"https://do.nark.eu.org",
"https://dc.j8.work",
"https://dockerproxy.com",
"https://gst6rzl9.mirror.aliyuncs.com",
"https://registry.docker-cn.com",
"http://hub-mirror.c.163.com",
"http://mirrors.ustc.edu.cn/",
"https://mirrors.tuna.tsinghua.edu.cn/",
"http://mirrors.sohu.com/" 
],
 "insecure-registries" : [
  "registry.docker-cn.com",
  "docker.mirrors.ustc.edu.cn"
  ],
"debug": true,
"experimental": false
}

3. 重载生效

sudo systemctl daemon-reload

4. 重启服务

sudo systemctl restart docker

5. 查看是否配置成功

docker info