We have got 2 situations, that you can not build for s390x because of the error
message NOKEY.

1) The opensuse-dhcp-server-image (container image) can not be built in
openSUSE zSystems with the following error message:
 warning: ./repos/openSUSE:Factory:zSystems/standard/dhcp-server.rpm: Header V3
RSA/SHA256 Signature, key ID f6ab3975: NOKEY
[   13s] warning: ./repos/openSUSE:Factory:zSystems/standard/dhcp-server.rpm:
Header V3 RSA/SHA256 Signature, key ID f6ab3975: NOKEY
[   13s] Traceback (most recent call last):
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 166,
in find_package_version
[   13s]     version = get_pkg_version(package)
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 243,
in get_pkg_version
[   13s]     return parse_version(run_command(command))
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 212,
in run_command
[   13s]     return subprocess.check_output(command).decode()
[   13s]   File "/usr/lib64/python3.10/subprocess.py", line 421, in
check_output
[   13s]     return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
[   13s]   File "/usr/lib64/python3.10/subprocess.py", line 526, in run
[   13s]     raise CalledProcessError(retcode, process.args,
[   13s] subprocess.CalledProcessError: Command '['rpm', '-q', '--queryformat',
'%{VERSION}', 'dhcp-server']' returned non-zero exit status 1.
[   13s] 
[   13s] During handling of the above exception, another exception occurred:
[   13s] 
[   13s] Traceback (most recent call last):
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 251,
in <module>
[   13s]     init(__name__)
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 248,
in init
[   13s]     main()
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 133,
in main
[   13s]     version = find_package_version(command_args['--package'], rpm_dir)
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 168,
in find_package_version
[   13s]     version = find_package_version_in_local_repos(rpm_dir, package)
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 187,
in find_package_version_in_local_repos
[   13s]     rpm_ver = get_pkg_version_from_rpm(rpm_file)
[   13s]   File "/usr/lib/obs/service/replace_using_package_version", line 236,
in get_pkg_version_from_rpm
[   13s]     return parse_version(run_command(command))
[   13s]   File
"/usr/lib/python3.10/site-packages/pkg_resources/_vendor/packaging/version.py",
line 197, in __init__
[   13s]     raise InvalidVersion(f"Invalid version: '{version}'")
[   13s] pkg_resources.extern.packaging.version.InvalidVersion: Invalid
version: '4.4.2.P1'
[   13s] service run failed for service 'replace_using_package_version'


2) My colleague Hoger wanted to build for s390x and based on openSUSE Factory
instead of openSUSE zSystems. You can experince the same issue with NOKEY with
default packages, there.

How can we solve this issue?