New image type java25-alpine

[litetex]

Enhancement Type

Improve an existing feature

Describe the enhancement

There is currently a Java 21 image for alpine, however there is none for Java 25.

I would like to have a alpine variant because it's a lot smaller (around 2x for the Java 21 version) than the ubuntu variant.

Could you provide the Java 25 alpine variant?

[itzg]

Previously the base image distribution wasn't available. It seems to be available now.