Debian Stretch Virtualbox VM.

bs_deb_stretch_vbox.sh

#!/usr/bin/env bash
set -e

PACKAGES="i3 tmux vim stow"

read -d '' APT_SRC <<"EOF" ||:
deb http://mirrors.kernel.org/debian/ stretch main contrib non-free
deb http://security.debian.org/debian-security stretch/updates main
deb http://mirrors.kernel.org/debian/ stretch-updates main contrib non-free
deb http://mirrors.kernel.org/debian stretch-backports main contrib non-free
EOF

is_vbox() {
        if ! hash dmidecode 2> /dev/null || ! hash sed 2> /dev/null; then return 1; fi
        output=$(dmidecode -t system | sed -e '/Product Name:/!d' -e 's/\s*Product Name: \(.*\)/\1/')
        [[ $output == 'VirtualBox' ]]
}

if is_vbox; then
        if ! hash curl 2> /dev/null; then apt update; apt install -y curl; fi
        vbox_src="deb http://download.virtualbox.org/virtualbox/debian stretch contrib"
        echo "$vbox_src" > /etc/apt/sources.list.d/vbox.list
        curl -L https://www.virtualbox.org/download/oracle_vbox_2016.asc | apt-key add -
        PACKAGES+=" virtualbox-guest-dkms virtualbox-guest-x11 linux-headers-$(uname -r)"
fi

echo "$APT_SRC" > /etc/apt/sources.list

apt update
apt upgrade -y
apt install -y $PACKAGES