rpm -Uvh http://vault.centos.org/7.6.1810/updates/x86_64/Packages/polkit-0.112-18.el7_6.1.x86_64.rpm --force

# Kickstart
setenforce 0
sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux
systemctl stop firewalld
systemctl disable firewalld
modprobe br_netfilter
echo '1' > /proc/sys/net/bridge/bridge-nf-call-iptables
swapoff -a
yum -y install epel-release
yum -y install git screen htop vim nmap

yum -y install docker
systemctl restart docker
systemctl enable docker