docker

https://www.runoob.com/docker/centos-docker-install.html

curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun

sudo yum remove docker
docker-client
docker-client-latest
docker-common
docker-latest
docker-latest-logrotate
docker-logrotate
docker-engine

yum-config-manager
--add-repo
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

sudo yum install docker-ce docker-ce-cli containerd.io