improve cleanup-rootfs.sh

[karaketir16]

Running docker image prune --all --force can save 2.5GB.

Total reclaimed space: 2.454GB

I am sending this as enabled to test with workflows. We can make it disabled by default like apt packages.

Or we can enable all, RM,APT,DOCKER and we can WAIT.
it lasts just 25s.
https://github.com/karaketir16/test-workflows/actions/runs/12079969301/job/33686630344#step:3:1

[TommyMurphyTM1234]

Is this PR still needed or is it made redundant by this one which has been merged?

• Update build workflow #1608

[karaketir16]

The existing cleanup is probably enough. This PR offers an additional cleanup that may be needed in the future.

function cleanup_docker()
{
	if [[ ${DOCKER} == 1 ]]; then
		docker image prune --all --force &
		if [[ ${WAIT} == 1 ]]; then
			wait
		fi
	fi
}

[TommyMurphyTM1234]

Thanks @karaketir16.

I'm a bit unclear on your comments here:

• improve cleanup-rootfs.sh #1630 (comment)

We can make it disabled by default like apt packages.

Or we can enable all, RM,APT,DOCKER and we can WAIT.

Is there any reason not to just rebase the PR and apply the latter change?

[karaketir16]

I am not sure I did it correctly. I rebased my branch.