Ubuntu 18 minimal xrdp installation

apt-get update
apt install blackbox xrdp xterm
systemctl start xrdp
systemctl enable xrdp

Take some time to download, there are a ton of dependencies.

or use this full version

apt install blackbox xrdp
apt install screen nmon nmap python jq lynx vim wget curl ntpdate \
screen nmon nmap xterm build-essential gdebi-core net-tools

that’s all