At the moment (much like our build image updater) https://github.com/adoptium/infrastructure/blob/master/ansible/docker/Jenkinsfile.test which builds aqa test images based off our static docker files. So far only x64 and aarch64 architectures are covered, this needs to be expanded to ppc64le and s390x for now.
The ubuntu LTS dockerfile should serve as a good OS for s390x and ppc64le