I'm broadly in favor here, some comments in line...
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First, we want to ensure that there are up to date [https://src.fedoraproject.org/container/fedora-toolbox fedora-toolbox] OCI images published on [https://registry.fedoraproject.org/ registry.fedoraproject.org] as release-blocking deliverables at critical points in the development schedule, just like the installation ISOs for the Editions from [https://download.fedoraproject.org/pub/fedora/linux/releases/ download.fedoraproject.org]. This must at least happen when an upcoming Fedora release is branched from Rawhide, and for the Beta and Final release candidates. If possible, they should be updated more frequently as part of the nightly composes. We do not expect this to happen after a Fedora release has gone GA.
In order to do this at branch point, we will need to move building this image into the compose process and mark it blocking. Which hopefully we can do. ;)
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It will be beneficial to consider the [https://src.fedoraproject.org/container/fedora-toolbox fedora-toolbox] images as release-blocking deliverables because Fedora's [https://opencontainers.org/ OCI] infrastructure is often broken. Here are [https://pagure.io/releng/issue/11092 two] [https://pagure.io/releng/issue/11367 recent] examples of <code>fedpkg container-build</code> not working. In the second case, it was preventing the images from being rebuilt to pull in an [https://bugzilla.redhat.com/show_bug.cgi?id=2170878 important] bug-fix. The broken infrastructure prevents regular Fedora contributors from jumping in to rebuild and publish the images at critical points in the development schedule. Making them release-blocking deliverables would attract greater attention and scrutiny from release engineering and ensure that a Fedora development cycle does not proceed with broken or outdated or missing <code>fedora-toolbox</code> images.
I'd like to note that making this blocking doesn't waive any kind of magic wand that makes our infrastructure more reliable. ;) The container build pipeline is a long collection of fragile things. It may well result in us slipping more based on things not working. ;(
kevin