Add `check` command for potential pack updates #244

	name: markdown
	on:
	pull_request:
	paths:
	- '.github/workflows/markdown.yml'
	- '.github/markdownlint.json'
	- '.github/markdownlint.jsonc'
	- '*/.md'

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
	cancel-in-progress: true

	permissions:
	contents: read

	jobs:
	linter:
	name: Lint markdown files
	runs-on: ubuntu-latest
	steps:
	- name: Harden Runner
	if: ${{ !github.event.repository.private }}
	uses: step-security/harden-runner@6c3c2f2c1c457b00c10c4848d6f5491db3b629df # v2.18.0
	with:
	egress-policy: audit

	- name: Checkout devtools
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

	- name: Register markdownlint warning matcher
	run: \|
	echo "::add-matcher::.github/markdownlint.json"

	- name: Lint markdown files
	uses: avto-dev/markdown-lint@04d43ee9191307b50935a753da3b775ab695eceb # v1.5.0
	with:
	args: '*/.md'
	ignore: '/testinput/'
	config: '.github/markdownlint.jsonc'

	- name: Remove markdownlint warning matcher
	if: always()
	run: \|
	echo "::remove-matcher owner=markdownlint::"

	check-links:
	name: Check markdown links
	runs-on: ubuntu-latest
	steps:
	- name: Checkout devtools
	uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

	- name: Check markdown links
	uses: tcort/github-action-markdown-link-check@e7c7a18363c842693fadde5d41a3bd3573a7a225 # v1.1.2
	with:
	use-quiet-mode: 'no'
	use-verbose-mode: 'yes'
	config-file: '.github/markdown-link-check.jsonc'

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