Add placeholder for reading PHYSLITE challenges #21

	name: Deploy GitHub Pages

	on:
	push:
	# branches: ["main"]
	# tags: [v*]
	workflow_dispatch:

	# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
	permissions:
	contents: read
	pages: write
	id-token: write

	concurrency:
	group: "pages"
	cancel-in-progress: true

	jobs:
	deploy:
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}

	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Pages
	uses: actions/configure-pages@v5

	- name: Setup site for deployment
	run: \|
	mkdir -p _site
	cp -r assets _site/
	cp -r figures _site/
	cp index.html _site/
	cp talk.md _site/

	- name: Fix permissions if needed
	run: \|
	chmod -c -R +rX "_site/" \| while read line; do
	echo "::warning title=Invalid file permissions automatically fixed::$line"
	done

	- name: Upload artifact
	uses: actions/upload-pages-artifact@v3

	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v4

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