Add `github-actions` updates label with `skip-notes` #390

	name: Test render

	on:
	pull_request:
	branches: [main]

	permissions:
	contents: read

	env:
	# Generate diffs relative to our downstream PR branch, not to downstream Git
	# main. This omits changes that have merged in repo-templates but haven't
	# merged downstream yet, making review easier. The Makefile does the same
	# when generating diffs for interactive development.
	FORK_ARGS: --fork-regex /coreos/ --fork-replacement /coreosbot-releng/ --fork-branch repo-templates

	jobs:
	render:
	name: Render
	runs-on: ubuntu-latest
	container: registry.fedoraproject.org/fedora:latest
	steps:
	- name: Check out repository
	uses: actions/checkout@v3
	- name: Install dependencies
	run: dnf install -y cargo git-core python3-pyyaml
	- name: Check for unreferenced templates
	run: \|
	python3 -c 'import yaml; print("\n".join(yaml.safe_load(open("config.yaml"))["templates"]))' \|
	sed -e 's/\.[a-z0-9]$/.yaml/' -e '/^[^.]$/ s/$/.yaml/' > expected
	stray=$(find . -path ./config.yaml -prune -o -name '*.yaml' -print \|
	sed 's:^\./::' \|
	grep -Fvxf expected \|\|:)
	if [ -n "${stray}" ]; then
	echo "Found template configs not referenced in config.yaml:"
	echo "${stray}"
	exit 1
	fi
	- name: Cache build artifacts
	uses: Swatinem/rust-cache@v2
	with:
	workspaces: tmpl8
	- name: Build tmpl8 binary
	run: cd tmpl8 && cargo build
	- name: Sync cache
	run: tmpl8/target/debug/tmpl8 update-cache $FORK_ARGS
	- name: Render diffs
	run: tmpl8/target/debug/tmpl8 diff $FORK_ARGS

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