This installation script also works on Cloudatcost.We now have an install script that can be used on CentOS 7 minimal platforms without having to resort to the ISO. You can download it here.
A word of warning. Be sure to select CentOS 7 platform on your VPS. Some, including Vultr, now support CentOS 8 which won't work. And don't run yum update either.
cd /root yum -y install net-tools wget nano tar wget http://incrediblepbx.com/incrediblepbx.sh chmod +x incrediblepbx.sh ./incrediblepbx.sh