docker安装:
cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Base.repo.back
wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo (此处的8需要根据centos版本而定)
yum clean all
yum makecache
yum update或者yum install -y yum-utils
yum install -y https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/edge/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm
yum install docker-ce docker-ce-cli
启动docker
systemctl enable docker
systemctl start docker
验证是否成功
docker run hello-world
usermod -aG docker $USER