安装 yum-utils，用来管理yum源
yum install -y yum-utils配置阿里docker镜像
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo更新
yum makecache fast安装docker-ce
yum install -y docker-ce启动并设置开机自启动
sudo systemctl start dockersudo systemctl enable docker验证安装是否成功
docker --version
docker info安装docker-compose插件
sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
插件软连接方便实用可选
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose验证
docker-compose --version
