如果每次拉取的时候遇到超时
error pulling image configuration: download failed after attempts=6: dial tcp 31.13.94.10:443: i/o timeout
解决方法如下：
设置国内镜像源：
sudo mkdir -p /etc/docker然后
sudo gedit /etc/docker/daemon.json
或者
sudo nano /etc/docker/daemon.json
或者
sudo vim /etc/docker/daemon.json在文件里面写入：
{
"register-mirrors": ["https://ox288s4f.mirror.aliyuncs.com","https://registry.docker-cn.com","http://hub-mirror.c.163.com","https://mirror.ccs.tencentyun.com"]
}写入之后执行命令
sudo systemctl daemon-reload
sudo systemctl restart docker或者sudo service docker restart再拉取就快了
)
