The "alpine*-armhf" images in Docker Hub (for the MDSplus build system) don't have a working Java about mdsplus HOT 2 OPEN

Proposal is to add a new Docker image for alpine-3.14-armhf and delete all older *-armhf images.

The alpine-3.14-* images have Java that works and also switched to python3. Experiments show that MDSplus (including *.jar files) can be built with the QEMU emulation layer (but it is slow, ~1.5 hours per build). Thus the *-armhf builds should still be done on a Raspberry Pi system.

And of course if add alpine-3.14-armhf then also should add alpine-3.14-x86 and alpine-3.14-x86_64 Docker images.

Decision needs to be made whether should drop the older Docker images: alpine-3.9-*, alpine-3.6-*, alpine-3-6-*, alpine-3.3-* and alpine-3-3-*.

from mdsplus.

Found that when run on a 32-bit Raspberry Pi, the old alpine-3.6-armhf image does not hang when type java -version. This implies that there is an incompatibility with the old alpine-*-armhf images and the QEMU emulation.

from mdsplus.