Related: #3182

This is also relevant for the newly tested docker images for Windows which will also need to be in a private repository so they can be shared:

Options:

• Dockerhub private registry (Subject to any licensing restrictions on those repositories)
• Azure Container Registry (Potentially best suited for our Windows Azure hosts
• GitHub container registry (ghcr.io)
• quay.io
• Self-hosted?
• Something else?

Noting that the OpenJ9 team use a private repository so that is known to work well.

@gdams Since you're more likely to be familiar with it (and I understand from earlier discussions this might be outside our sponsored credits) can you look at what we need to get us set up with ACR for Windows (and probably s390x for now) build docker images?

I had an old container registry setup a while ago (adoptium.azurecr.io). There's a few steps to getting it running in a GH actions env

@gdams Where are we with this at the moment? Are we set up with appropriate credentials to be able to pull from the Azure registry during the builds?