podman doesn't seem to work as part of the installer generation process

[sxa]

As part of testing #793 I was trying to build the images using podman instead of docker. While the core is hard coded to invoke docker if I create a symlink from docker to podman on my machine somewhere at the start of the path it should work ok, and indeed the docker build command that the installer generation process outputs seems to work standalone. Unclear whether this is something specific to my machine or with podman itself, but worthy of investigation to look for a resolution. It's acting as though the process is squashing my PATH somewhere along the line but it's not lcear where that might be happening.

> Task :jdk:suse:packageJdkSuse FAILED
Watching 7 directories to track changes
Caching disabled for task ':jdk:suse:packageJdkSuse' because:
  Build cache is disabled
Task ':jdk:suse:packageJdkSuse' is not up-to-date because:
  Task has failed previously.
Watching 6 directories to track changes
Starting process 'command 'docker''. Working directory: /var/home/sxa/git/openjdk-installer/linux/jdk/suse/src/main/packaging Command: docker build --no-cache -t adoptium-packages-linux-jdk-suse -f Dockerfile /var/home/sxa/git/openjdk-installer/linux/jdk/suse/src/main/packaging
Watching 7 directories to track changes
:jdk:suse:packageJdkSuse (Thread[Execution worker for ':',5,main]) completed. Took 0.007 secs.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':jdk:suse:packageJdkSuse'.
> A problem occurred starting process 'command 'docker''