workflows: DevEx improvements #210

	name: Generate Dockerfiles/patches

	on:
	push:
	branches:
	- master
	tags-ignore:
	- '*'
	pull_request:
	paths:
	- cpanfile
	- config.yml
	- generate.pl
	- .github/workflows/generate-dockerfiles-patches.yml

	jobs:
	generate:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7

	- name: Set up git user name and email
	run: \|
	git config --global user.email "test@github-actions"
	git config --global user.name "GitHub Actions"

	- name: Install system perl and cpanm
	run: \|
	sudo apt-get update && sudo apt-get install -y --no-install-recommends perl cpanminus

	- name: Install dependencies
	run: \|
	sudo cpanm --quiet --installdeps --notest .

	- name: Generate Dockerfiles/patches
	id: generate
	run: \|
	export DOCKER_PERL_DOWNLOADS_DIR=/tmp/docker-perl-downloads
	perl ./generate.pl
	/usr/bin/git --no-pager diff --stat > diffstat.txt
	if [[ -s diffstat.txt ]]; then
	echo has_extra_diffs=1 >> $GITHUB_OUTPUT
	fi

	- name: Fail if there are extra diffs
	if: steps.generate.outputs.has_extra_diffs
	run: \|
	echo "::error title=generate::Extra diffs found during generate"
	echo "Additional changes found during generate - check diffstat below:"
	echo "::group::diffstat"
	cat diffstat.txt
	echo "::endgroup::"
	echo

	exit 1

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