docs: add recipe for session and authentication #1223

	name: Check links with Lychee

	on:
	pull_request:
	paths:
	- "docs/**"
	- "*.md"
	branches:
	- main

	# Remove default permissions of GITHUB_TOKEN for security
	# https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs
	permissions: {}

	jobs:
	link-checker:
	runs-on: ubuntu-latest
	steps:
	# Cache lychee results (e.g. to avoid hitting rate limits)
	- name: Restore lychee cache
	uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
	with:
	path: .lycheecache
	key: cache-lychee-${{ github.sha }}
	restore-keys: cache-lychee-

	# check links with Lychee
	- uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6

	- name: Lychee link checker
	uses: lycheeverse/lychee-action@054a8e8c7a88ada133165c6633a49825a32174e2 # for v1.8.0
	with:
	# arguments with file types to check
	args: >-
	--cache
	--verbose
	--no-progress
	--max-cache-age=1d
	'./*/.md'
	'./*/.html'
	# fail the action on broken links
	fail: true
	env:
	# to be used in case rate limits are surpassed
	GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

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