ci: Add a concurrency strategy (#1023) #15

	name: GitHub-Pages

	on:
	push:
	branches:
	- main
	paths:
	- doc/**
	- mkdocs.yaml
	- .github/workflows/gh-pages.yaml

	# See https://stackoverflow.com/a/72408109
	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	deploy:
	runs-on: ubuntu-20.04
	name: Deploy website
	permissions:
	contents: write
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Setup Python
	uses: actions/setup-python@v3
	with:
	python-version: '3.8'

	# install pip=>20.1 to use "pip cache dir"
	- name: Upgrade pip
	run: python3 -m pip install --upgrade pip

	- name: Get pip cache dir
	id: pip-cache
	run: echo "::set-output name=dir::$(pip cache dir)"

	- name: Cache dependencies
	uses: actions/cache@v3
	with:
	path: ${{ steps.pip-cache.outputs.dir }}
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install dependencies
	run: python3 -m pip install mkdocs mkdocs-material

	- name: Rebuild website
	run: make _website_build

	- name: Deploy
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./dist/website

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