安装docker
cat >/etc/yum.repos.d/docker.repo<<EOF
[docker-ce-edge]
name=Docker CE Edge - \$basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/\$basearch/edge
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg
EOF
yum安装
yum -y install docker-ce
查看docker版本
docker --version
启动docker
systemctl enable docker
systemctl start docker
安装docker-compose
sudo curl -L "https://github.com/docker/compose/rele