The shadow-utils package was added to the base toolbox images to ensure
the presence of the useradd(8) command. Currently the package is
already pulled in by various dependencies. Therefore, it doesn't
increase the size of the base image, but serves as a safeguard against
any inadvertent changes.
Currently the toolbox script identifies toolbox images and containers
by checking whether the com.redhat.component label matches
"fedora-toolbox". However, as per the Fedora Container Guidelines [1],
the com.redhat.com label should match the Red Hat Bugzilla component
name where bugs against the image should be reported. This means that
images derived from the base fedora-toolbox image would likely end up
overwriting it.
One option would've been to mandate that all toolbox images have the
"fedora-toolbox-" prefix in their names. However, it's better to avoid
putting limitations on how images can be named. The "fedora" name
wouldn't anyway work for images based on other distributions, and not
all images are going to use the Red Hat bugzilla for tracking bugs.
It's better to use a tag that's uniquely associated with the toolbox
project, and isn't tied to a particular distribution or bug tracker.
[1] https://fedoraproject.org/wiki/Container:Guidelines
For a locally built squashed fedora-toolbox:29 image [1], the size
reported by 'podman images' goes from 630 MB to 425 MB.
[1] Using: buildah bud --squash ...
The krb5-libs package was added to the base toolbox images to ensure
the presence of the /etc/krb5.conf.d directory with the correct
permissions. Currently, the package is already pulled in by various
dependencies. Therefore, it doesn't increase the size of the base
image, but serves as a safeguard against any inadvertent changes.
https://github.com/debarshiray/toolbox/pull/74
