Updates the various operating system elements so that we set the DISTRO_NAME variable for each distro. This env var is used by bin/pkg-map to set the default distribution name for package name mappings. Change-Id: Ib4b05eb7191dd50d25799a0bac51fd15c01b74cb
Create an image based on Debian. We default to unstable but DIB_RELEASE is mapped to any series of Debian.
Note that the default Debian series is unstable, and the default
mirrors for Debian can be problematic for unstable. Because apt does
not handle changing Packages files well across multiple out of sync
mirrors, it is recommended that you choose a single mirror of debian,
and pass it in via DIB_DISTRIBUTION_MIRROR.
Use of this element will also require the tool 'debootstrap' to be available on your system. It should be available on Ubuntu, Debian, and Fedora.
The DIB_OFFLINE or more specific DIB_DEBIAN_USE_DEBOOTSTRAP_CACHE
variables can be set to prefer the use of a pre-cached root filesystem
tarball.