CentOS8安装docker-ce

dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
dnf list docker-ce --showduplicates | sort -r
dnf install docker-ce-3:19.03.15-3.el8 -y
systemctl disable firewalld
systemctl enable --now docker
usermod -aG docker $USER

# 安装iptables
yum install iptables-services -y
systemctl start iptables

systemctl restart docker