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
centos-minimal
Create a minimal image based on CentOS 7.
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.
By default, DIB_YUM_MINIMAL_CREATE_INTERFACES is set to
enable the creation of
/etc/sysconfig/network-scripts/ifcfg-eth[0|1] scripts to
enable DHCP on the eth0 & eth1 interfaces.
If you do not have these interfaces, or if you are using something else
to setup the network such as cloud-init, glean or network-manager, you
would want to set this to 0.