ce781fbbc4
As described in the comments, CentOS overrides the "distroverpkg" variable in yum.conf. This is the package that yum queries to establish the value of the $releasever variable. On other platforms, this defaults to "redhat-release" (which "fedora-release" provides) so everything works. It is only when the base-system "distroverpkg" refers to a package not in the chroot we hit the issue. We can avoid this by setting the releasever variable via the commandline. Change-Id: I231c3277960992cd479b8aff7838f246397936f2
yum-minimal
Base element for creating minimal yum-based images.
This element is incomplete by itself, you'll want to use the centos-minimal or fedora-minimal elements to get an actual base image.
Use of this element will require 'yum' and 'yum-utils' to be installed on Ubuntu and Debian. Nothing additional is needed on Fedora or CentOS.
The DIB_OFFLINE or more specific DIB_YUMCHROOT_USE_CACHE variables can be set to prefer the use of a pre-cached root filesystem tarball.