[4015979983] Upstream Reporter: Clement Verna
Upstream issue status: Open
Upstream description:

1. 1. Summary

The `DESCRIPTION` value in `build-args-rhel-9.8.conf` contains a period (`.`) in the version number "9.8", which causes OpenShift release image validation to fail.

1. 1. Error

```
error: unable to check whether to include image quay-proxy.ci.openshift.org/openshift/ci@sha256:800e57dce493a5785335000053e881476c6fbfda6492304a3ab7c1117f5d6279: tag "rhel-coreos" has an invalid io.openshift.build.versions or io.openshift.build.version-display-names label: the display name "Red Hat Enterprise Linux CoreOS 9.8" must only be alphanumerics, spaces, and symbols in [():-]
```

1. 1. Root Cause

Commit e84448ce ("build-args-rhel-*: adjust DESCRIPTION for openshift labels") set:

```
DESCRIPTION=Red Hat Enterprise Linux CoreOS 9.8
```

This value is used via PR https://github.com/coreos/fedora-coreos-config/pull/4001 to set the label:

```
--label io.openshift.build.version-display-names=machine-os="${DESCRIPTION}"
```

However, the validation in `openshift/oc` (`pkg/cli/admin/release/image_mapper.go`) uses a regex that does *not* allow periods:

```go
reAllowedDisplayNameKey = regexp.MustCompile(`^[a-zA-Z0-9-:s()]+$`)
```

Allowed characters: `a-z`, `A-Z`, `0-9`, `-`, `:`, spaces, `(`, `)` ? but *not `.`*

1. 1. Affected Files

• `build-args-rhel-9.8.conf`
• `build-args-rhel-10.2.conf` (likely has same issue)

1. 1. Suggested Fix

Remove the period from the `DESCRIPTION` value. Options:

1. `DESCRIPTION=Red Hat Enterprise Linux CoreOS 9` (drop minor version)
2. `DESCRIPTION=Red Hat Enterprise Linux CoreOS 9-8` (use hyphen instead)
3. `DESCRIPTION=Red Hat Enterprise Linux CoreOS` (match previous label format)

Option 3 matches what was used before this change according to the commit message.