Add slides to the site #118

	name: publish-gh-pages

	on:
	push:
	branch: main

	jobs:
	gh-pages:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Prepare _site
	run: \|
	echo generate main html page in _site/
	mkdir _site

	- name: Generate main page
	run: \|
	cp .assets/template.html _site/index.html
	cp .assets/style.css _site/
	npx [email protected] --gfm -i README.md >> _site/index.html
	cat .assets/template_end.html >> _site/index.html
	mkdir _site/assignments
	cp learninggoals.html _site/

	- name: Push to gh-pages
	run: \|
	git clone --quiet --branch gh-pages --depth 1 https://github.com/${{ github.repository }}.git .gh-pages
	rm -rf .gh-pages/*
	mv _site/* .gh-pages
	cd .gh-pages
	git add .
	touch .nojekyll
	git add .nojekyll
	git config --local user.email "[email protected]"
	git config --local user.name "GitHub Action"
	git commit --allow-empty -m "Update gh-pages for ${{ github.sha }}"
	git push https://$GITHUB_ACTOR:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}.git HEAD:gh-pages --force --follow-tags -v

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