CentOS7 上安装Docker和Docker-Compose，您可以按照以下步骤进行操作：

安装Docker

使用阿里云yum源安装docker

yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
yum -y install docker-ce

配置开机启动

systemctl start docker
systemctl enable docker

验证是否安装成功

docker -v

安装Docker-Compose

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

验证是否安装成功

docker-compose --version