docker 和docker-compse安装

安装docker
`先移除旧版docker
sudo yum remove docker

安装一些必要的系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2

添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

更新 yum 缓存
sudo yum makecache fast

安装 Docker-ce
sudo yum -y install docker-ce

启动 Docker 后台服务
sudo systemctl start docker`

安装docker-compose
`1、下载docker-compose
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

2、增加可执行权限
sudo chmod +x /usr/local/bin/docker-compose

3、添加软链接
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

4、确认版本
$ docker-compose --version

5、增加docker-compose命令补全
sudo yum install bash-completion -y

sudo curl
-L https://raw.githubusercontent.com/docker/compose/1.29.2/contrib/completion/bash/docker-compose
-o /etc/bash_completion.d/docker-compose
`