首先要有一个安装好CentOS的系统，系统最好是7的，然后用ssh工具连接，将以下命令逐行输入，确定。
sudo yum check-update
curl -fsSL https://get.docker.com/ | sh
sudo systemctl start docker
sudo systemctl status docker
sudo systemctl enable docker
sudo yum check-update
curl -fsSL https://get.docker.com/ | sh
sudo systemctl start docker
sudo systemctl status docker
sudo systemctl enable docker
