Add first steps to documentation #276 #660

	#this action must be synchronized with version-bump-and-package.yml
	name: build

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	build:
	runs-on: ${{ matrix.platform }}
	strategy:
	matrix:
	platform: [ubuntu-latest, macos-latest]
	python-version: [3.8, 3.9]

	steps:
	- uses: actions/checkout@v2

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools wheel
	pip install virtualenv tox

	- name: test build package
	run: tox -e build

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