Add tig project #428

	name: Docs CI

	on:
	pull_request:
	branches: [ vara, vara-dev ]

	jobs:
	build:
	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0

	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: 3.9

	- name: Install system dependencies
	run: \|
	sudo apt install pandoc libgraphviz-dev

	- name: Install varats
	run: \|
	python -m pip install --upgrade pip
	pip install wheel
	pip install -e ./varats-core
	pip install -e ./varats

	- name: Install docs dependencies
	working-directory: ./docs
	run: \|
	pip install -r requirements.txt

	- name: Build docs
	working-directory: ./docs
	run: \|
	make html

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