$ sudo yum install -y yum-utils  device-mapper-persistent-data  lvm2
$ sudo yum-config-manager  --add-repo  https://download.docker.com/linux/centos/docker-ce.repo
$ sudo yum install docker-ce docker-ce-cli containerd.io

[package]
- package podman-2.0.5-5.module_el8.3.0+512+b3b58dca.x86_64 requires runc >= 1.0.0-57, but none of the providers can be installed
- package containerd.io-1.4.3-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-68.rc92.module_el8.3.0+475+c50ce30b.x86_64
- package containerd.io-1.4.3-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-68.rc92.module_el8.3.0+475+c50ce30b.x86_64
- cannot install the best candidate for the job
- package runc-1.0.0-64.rc10.module_el8.3.0+479+69e2ae26.x86_64 is filtered out by modular filtering
问题 2: problem with installed package buildah-1.15.1-2.module_el8.3.0+475+c50ce30b.x86_64
- package buildah-1.15.1-2.module_el8.3.0+475+c50ce30b.x86_64 requires runc >= 1.0.0-26, but none of the providers can be installed
- package containerd.io-1.4.3-3.1.el8.x86_64 conflicts with runc provided by runc-1.0.0-68.rc92.module_el8.3.0+475+c50ce30b.x86_64
- package containerd.io-1.4.3-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-68.rc92.module_el8.3.0+475+c50ce30b.x86_64
- package docker-ce-3:20.10.2-3.el8.x86_64 requires containerd.io >= 1.4.1, but none of the providers can be installed
- cannot install the best candidate for the job

$ yum erase podman buildah

$ sudo yum install docker-ce docker-ce-cli
$ sudo systemctl start docker
$ docker --version

$ sudo systemctl enable docker


$ yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
$ dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.13-3.1.el7.x86_64.rpm
$ dnf install docker-ce

$ systemctl enable docker.service
$ systemctl start docker.service