这里配置为阿里的镜像。访问阿里云官网 https://www.aliyun.com/ 登陆账号，进入管理控制台 --> 产品与服务 --> 弹性计算 --> 容器镜像服务 --> 镜像加速器，复制自己的专属加速器地址
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://xxxx.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
查看启动状态
[sandwich@192 docker]$ systemctl status docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2021-10-31 10:56:32 PDT; 4min 17s ago
Docs: https://docs.docker.com
Main PID: 29180 (dockerd)
Tasks: 7
Memory: 48.8M
CGroup: /system.slice/docker.service
└─29180 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
