ci: bump actions/cache from 3 to 4 #75

	name: github pages

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	deploy:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v3

	- uses: actions/setup-python@v4
	with:
	python-version: "3.10"

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

	- name: Get pip cache dir
	id: pip-cache
	run: echo "PIP_CACHE_DIR=$(pip cache dir)" \| tee -a "${GITHUB_OUTPUT}"

	- uses: actions/cache@v4
	with:
	path: ${{ steps.pip-cache.outputs.PIP_CACHE_DIR }}
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install dependencies
	run: python3 -m pip install -r ./requirements.txt

	- run: mkdocs build --config-file ./mkdocs.yml

	- name: Deploy to GitHub Pages
	if: github.ref == 'refs/heads/main'
	uses: peaceiris/actions-gh-pages@v3.9.2
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./site

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