Add a link checker to CI. #6

	# This is a basic workflow to check for broken links with GitHub Actions

	name: Link Checker

	on:
	pull_request:
	branches: [main]
	workflow_dispatch:

	jobs:
	linkChecker:
	timeout-minutes: 2
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Link Checker
	id: lychee
	uses: lycheeverse/[email protected]
	with:
	# Exclude the image.sc forum (which works) but returns 403 from
	# github runners, ignore the project slug README since the links are
	# necessarily not real links - i.e. demos and to be filled by
	# cookiecutter values.
	args: "--verbose --exclude https://forum.image.sc/ --exclude-path '{{cookiecutter.project_slug}}/README.md' -- ."
	fail: true
	jobSummary: true
	env:
	GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

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