centos8 装docker 问题

Last metadata expiration check: 0:00:27 ago on Tue 02 Nov 2021 12:25:29 AM EDT.
Error: 
 Problem: problem with installed package podman-1.0.0-2.git921f98f.module_el8.0.0+58+91b614e7.x86_64
  - package podman-3.2.3-0.11.module_el8.4.0+942+d25aada8.x86_64 requires runc >= 1.0.0-57, but none of the providers can be installed
...
...
 - package containerd.io-1.4.11-3.1.el8.x86_64 obsoletes runc provided by runc-1.0.0-74.rc95.module_el8.4.0+886+c9a8d9ad.x86_64
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

yum erase podman buildah

继续安装
yum install docker-ce

centos8 默认使用的容器化技术为 podman，产生了冲突。

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/version": dial unix /var/run/docker.sock: connect: permission denied

sudo groupadd docker #添加docker用户组
sudo gpasswd -a $USER docker #将登陆用户加入到docker用户组中
newgrp docker #更新用户组
docker ps #测试docker命令是否可以使用sudo正常使用

权限问题

docker: Error response from daemon: cannot start a stopped process: unknown.

yum install -y libseccomp-devel

依赖问题