1- Install Ubuntu Mate VirtualBox machine
2- Give an access to Internet (proxy to /etc/environnment)
3- Install gcc and some other tools (sudo apt install build-essential software-properties-common)
4- Install VB add-on
5- add you user to vbosf group: sudo adduser $USER vboxsf (and reboot !)
6- Install (or verify )unattended-upgrades
7- Install zsh, oh-my-zsh and bullet-train theme
8- Install pip, virtualenv, virtualenvwrapper