docker build is bound to ubuntu and apt

[judovana]

temurin-build/docker/dockerfile-generator.sh

Line 176 in 8ae8d28

printAptPackages() {

is bound to apt, and

temurin-build/docker/dockerfile-generator.sh

Line 169 in 8ae8d28

FROM ubuntu:18.04

is bound to ubuntu:18.04

I have a changeset (dangling around for ages actually) which enabled fedora and rpms. That PR is now based on hardcoded values, but I would like to make it more official.

I wanted to extend --docker/--podman or -D for autodetected as done in #3796 simply for optional parameter. No parameter would go to the original ubuntu:21 , and any other parameter will be directly the image to use, where there will be hardcoded switch of known OSes using yum/dnf and list of systems using apt. Probably ending with exception if unknown system is hit.

WDYT?