經(jīng)常拉取鏡像的時候很慢或者拉不下來，這里可以使用阿里云鏡像加速器：

wx@wx-virtual-machine:$ sudo tee /etc/docker/daemon.json <<-'EOF'
> {
>   "registry-mirrors": ["https://9cpn8tt6.mirror.aliyuncs.com"]
> }
> EOF
{
  "registry-mirrors": ["https://9cpn8tt6.mirror.aliyuncs.com"]
}
wx@wx-virtual-machine:$ systemctl daemon-reload
wx@wx-virtual-machine:$ systemctl restart docker

之后docker進(jìn)行pull時就很快