Every run we are doing a full tar.gz of the chroot environment that never gets used. It's not suitable for CI since we use fresh images each time there. The cache in general isn't really isn't a very safe thing to have around, because there's no invalidation procedure and no real way to make one -- we've no guarantee that a new chroot build even moments after a previous one wouldn't bring in or different packages, etc (of course this is *unlikely*, but the longer you go between builds the worse the problem becomes. Also, tons of packages get installed after this not from any cache, so potential speed-up is rather marginal. Debian turned this off with I58fc485aacacaa17243bf9ce760ed91256d1f182. However, given the reasons above and it's complete lack of testing, I don't see this as useful. If we really want this type of thing, I think we should come up with a way to use a persistent external yum/dnf cache that yum/dnf keeps in sync with it's usual invalidation rules. Change-Id: I66789c35db75c41bc45ea1ad2e26f87456de4e4d
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.
If you wish to have DHCP networking setup for eth0 & eth1 via /etc/sysconfig/network-config scripts/ifcfg-eth[0|1], set the environment variable DIB_YUM_MINIMAL_CREATE_INTERFACES to 1.