https://redplus.me/post/set-up-headless-windows-10-virtual-machine-on-remote-linux-server/ https://www.ostechnix.com/install-oracle-virtualbox-ubuntu-16-04-headless-server/ https://www.howtoforge.com/tutorial/running-virtual-machines-with-virtualbox-5.1-on-a-headless-ubuntu-16.04-lts-server/
https://download.virtualbox.org/virtualbox/6.1.6
sudo apt-add-repository "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -sc) contrib"