With the Antora migration mostly done we might want to add some more documentation around CDS

Comment From: mhalbritter

We're using the CDS friendly layout in our "Dockerfiles" doc by default now (see #40094).

Comment From: mhalbritter

I've updated the "Efficient deployments" section.

Comment From: mhalbritter

There are some bits missing. We could link to the Spring Framework docs. And we could explain the CDS workflow: first, start the training run, then use the classes archive.

Comment From: mhalbritter

Fixed by https://github.com/spring-projects/spring-boot/pull/40175.