[ci] Update action/checkout to v4 #64

	name: docs

	on:
	push:
	branches:
	- main
	- docs
	workflow_dispatch:

	permissions:
	contents: read

	# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
	# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
	concurrency:
	group: docs
	cancel-in-progress: false

	jobs:
	build-and-deploy-gh-pages:
	name: Update GitHub Pages
	runs-on: ubuntu-latest
	environment:
	name: docs
	url: ${{ steps.deployment.outputs.page_url }}
	permissions:
	pages: write
	id-token: write
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	# See https://dev.to/epassaro/caching-anaconda-environments-in-github-actions-5hde
	- name: Set up Mambaforge
	uses: conda-incubator/setup-miniconda@v2
	with:
	miniforge-variant: Mambaforge
	miniforge-version: 22.9.0-3
	activate-environment: deepali
	use-mamba: true
	- id: cache
	uses: actions/cache@v3
	with:
	path: /usr/share/miniconda3/envs/deepali
	key: conda-env-deepali-${{ hashFiles('conda/environment.linux-64.lock') }}
	- name: Update environment
	run: mamba --no-banner update --name deepali --file conda/environment.linux-64.lock
	if: steps.cache.outputs.cache-hit != 'true'
	- name: Install package
	run: conda run --name deepali pip install .
	- name: Build Pages
	run: conda run --name deepali jupyter-book build docs
	- name: Set up Pages
	uses: actions/configure-pages@v3
	- name: Upload Pages
	uses: actions/upload-pages-artifact@v1
	with:
	path: docs/_build/html
	- id: deployment
	name: Deploy Pages
	uses: actions/deploy-pages@v2

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