# valid distros list
# the distro must be the name used in /etc/os-release
# <distro>,<core/default docker image name>,<install command>,<update command>
alpine, alpine, apk add --no-cache     ,      apk update
debian, debian, apt-get install -y, apt-get update
arch, archlinux, pacman -S --noconfirm --needed, pacman -Syu
ubuntu, ubuntu, apt-get install -y, apt-get update