docker资料---添加阿里docker加速镜像

首先必须登录阿里云获得加速镜像地址：

https://cr.console.aliyun.com/#/accelerator

 基于centOS7

cp -n /lib/systemd/system/docker.service /etc/systemd/system/docker.service
sudo sed -i "s|ExecStart=/usr/bin/docker daemon|ExecStart=/usr/bin/docker daemon --registry-mirror=https://<添加地址>|g" /etc/systemd/system/docker.service
sudo sed -i "s|ExecStart=/usr/bin/dockerd|ExecStart=/usr/bin/dockerd --registry-mirror=https://<添加地址>|g" /etc/systemd/system/docker.service
systemctl daemon-reload
service docker restart