Setup Ubuntu desktop environments

Ubuntu Minimal

sudo apt-get install --no-install-recommends ubuntu-desktop-minimal

Gnome Vannila Minimal

sudo apt-get install --no-install-recommends xorg gdm3     # Gnome display manager
sudo apt-get install --no-install-recommends xorg lightdm  # Light display manager

i3 desktop

sudo apt-get install --no-install-recommends xdm xorg i3      # X11 display manager
sudo apt-get install --no-install-recommends ligntdm xorg i3  # Light display manager
sudo systemctl enable lightdm

Install Virtualbox Guest Additions

sudo mkdir /media/cdrom             # Create mount point
sudo mount /dev/cdrom /media/cdrom  # Mount CDrom
cd /media/cdrom
sudo ./VBoxLinuxAdditions.run       # Install Addon
sudo reboot
sudo usermod -aG vboxsf -- "$USER"  # Add user to vbosf group
cat /etc/group | grep "$USER"       # Validate user group