Support and use docker builds on Linux/ppc64le

[sxa]

Features that impact the whole project (e.g. Adding a new OpenJDK distribution)are made over at the adoptium.

Otherwise, please describe what enhancement you would like to see in the build
scripts:

In order to improve isolation of build environments and ensure consistency across all Linux architecture builds, I'd like to move the pc64le builds into docker containers. Some initial work was done for this in the past (The images do get created) but we should look at running the builds this way more regularly. We have a dockerhost machine that will be suitable and can potentially get more as backup systems to run them on. Tasks required:

• Verify that the exiting image from the image updator job is suitble for building (ideally verified with the reproducible build options
• Ensure that we have appropriate machine tags/capacity to perform the builds
• Adjust the pipelines to use these systems (e.g. changing pipeline configs)