export DISTRO_NAME=ubuntu
export DIB_RELEASE=${DIB_RELEASE:-xenial}
export DIB_DEBIAN_COMPONENTS=${DIB_DEBIAN_COMPONENTS:-main,restricted,universe}

if [ -n "${DIB_UBUNTU_DISTRIBUTION_MIRROR:-}" ]; then
    DIB_DISTRIBUTION_MIRROR=$DIB_UBUNTU_DISTRIBUTION_MIRROR
fi
export DIB_DISTRIBUTION_MIRROR=${DIB_DISTRIBUTION_MIRROR:-http://archive.ubuntu.com/ubuntu}