Install nomachine on remote headless virtual machine

• Install desktop system on the virtual machine

  sudo apt install ubuntu-desktop

• Install nomachine for linux
• The system display manager should be stop and disabled, otherwise, the remote desktop screen will be limited low resolution. Use the script below to do so:

  dm=$(basename "$(cat /etc/X11/default-display-manager)")
  sudo systemctl stop $dm
  sudo systemctl disable $dm
  sudo systemctl restart nxserver