添加docker源

curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo

安装docker所需包

dnf install -y yum-utils  device-mapper-persistent-data  lvm2 containerd.io

安装docker

dnf install docker-ce docker-ce-cli

开机自启

systemctl enable docker

打开docker

systemctl start docker

遇到错误的解决方式

Error:
Problem: problem with installed package podman-1.6.4-10.module_el8.2.0+305+5e198a41.x86_64
package podman-1.6.4-10.module_el8.2.0+305+5e198a41.x86_64 requires runc >= 1.0.0-57, but none of the providers can be installed
package containerd.io-1.3.7-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-65.rc10.module_el8.2.0+305+5e198a41.x86_64
package containerd.io-1.3.7-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-65.rc10.module_el8.2.0+305+5e198a41.x86_64
conflicting requests
package containerd.io-1.3.9-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-65.rc10.module_el8.2.0+305+5e198a41.x86_64
package containerd.io-1.3.9-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-65.rc10.module_el8.2.0+305+5e198a41.x86_64
package runc-1.0.0-64.rc10.module_el8.2.0+304+65a3c2ac.x86_64 is filtered out by modular filtering
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages)

解决方式：

wget https://download.docker.com/linux/centos/8/x86_64/stable/Packages/containerd.io-1.3.9-3.1.el8.x86_64.rpm
yum localinstall containerd.io-1.3.9-3.1.el8.x86_64.rpm

dnf install docker-ce docker-ce-cli