[root@localhost docker]# docker pull mysql Using default tag: latest Trying to pull repository docker.io/library/mysql ... Get https://registry-1.docker.io/v2/library/mysql/manifests/latest: Get http

//阿里云镜像
{
"registry-mirrors":["https://6kx4zyno.mirror.aliyuncs.com"]
}

1）vim /etc/docker/daemon.json

2）添加上述阿里云镜像

3）重启Docker

　　systemctl daemon-reload
　　systemctl restart docker