docker以及docker-compose的安装

安装docker
安装所需的包：

sudo yum install -y yum-utils  device-mapper-persistent-data  lvm2

设置稳定存储库：

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

安装docker-ce

yum -y install docker-ce
systemctl start docker
systemctl enable docker

查看docker版本

docker version

安装docker-compose

sudo curl -L "https://github.com/docker/compose/releases/download/1.25.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

待安装完成后，执行查询版本的命令确认安装成功

docker-compose version