Merge pull request #219 from UCL/remove-python2 #66

	name: Build website
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	jobs:
	Build-website:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	# Adds keys to work with other repositories used in this lesson (e.g., UCL/github-example)
	- uses: webfactory/ssh-agent@v0.5.4
	with:
	ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
	- uses: actions/cache@v2 # FIXME: add apt(latex)
	with:
	path: vendor/bundle
	key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile') }}
	restore-keys: \|
	${{ runner.os }}-gems-
	- uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt', '.github/python/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Install TeXLive
	uses: DanySK/setup-texlive-action@0.1.1
	- id: setup-python
	name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	- name: Install dependencies
	uses: py-actions/py-dependency-install@v2
	with:
	path: ".github/python/requirements.txt"
	- name: Building notes
	run: make ready
	- name: Builds website
	uses: helaili/jekyll-action@v2
	with:
	target_branch: 'gh-pages'
	build_only: true
	- name: Build website and deploy
	if: github.ref == 'refs/heads/main'
	uses: helaili/jekyll-action@v2
	with:
	target_branch: 'gh-pages'
	token: ${{ secrets.GITHUB_TOKEN }}

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