标题CentOs8.x安装Docker
yum -y update
yum install https://download.docker.com/linux/fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm
yum install -y yum-utils device-mapper-persistent-data lvm2
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum install -y docker-ce
systemctl start docker
按照步骤依次执行，需要y/n的就 y就行
