Typically I perform minimal installations when I install any distro of Linux. Occasionally, albeit very rarely – it can be useful to have access to the X-Windows / Gnome desktop GUI. From a bare metal install, the following will add a GUI to your server (or desktop!). This will also install XRDP which emulates windows terminal services and will make your desktop available via an msrdp client on any windows machine. Assuming root access otherwise, precede each command with sudo.
yum groupinstall "Server with GUI" -y
yum install xrdp -y
systemctl set-default graphical
Installing Centos 8