使用DNF添加并启用官方Docker CE存储库安装containerd.io包（手动）安装最新版docer ce启用docker添加当前用户加入docker用户组关闭防火墙测试docker 命令安装docker-compose
使用DNF添加并启用官方Docker CE存储库sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo安装containerd.io包（手动）
sudo dnf install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.4.9-3.1.el7.x86_64.rpm
最新版查看：https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
安装最新版docer cesudo dnf install docker-ce -y --nobest启用docker
sudo systemctl enable --now docker添加当前用户加入docker用户组
sudo usermod -aG docker $USER关闭防火墙
sudo systemctl stop firewalld.service sudo systemctl disable firewalld测试docker 命令
docker images安装docker-compose
参考：https://get.daocloud.io/#install-compose
curl -L https://get.daocloud.io/docker/compose/releases/download/v2.3.3/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose chmod +x /usr/local/bin/docker-compose
本文参考：https://blog.csdn.net/hhcccchh/article/details/115318491
