1、安装 Docker 

# 安装依赖
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
# 添加docker下载仓库
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
# 安装docker-ce
sudo yum install -y docker-ce
# 启动docker-ce
sudo systemctl start docker
# 验证
sudo docker --version
sudo docker run hello-world
图1

出现图1所示，Docker启动成功。

2、安装 docker-compose 

sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

docker-compose --version