update backends tutorials intro #857

	name: CI

	on:
	push:
	branches: main
	pull_request:
	branches: main

	# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
	permissions:
	contents: write
	pages: write
	id-token: write

	# Allow one concurrent deployment
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build-and-deploy:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Setup JupyterBook Cache
	uses: actions/cache@v3
	with:
	path: _build
	# NOTE: change key to "jupyterbook-DATE" to force rebuilding cache
	key: jupyterbook-20230707

	- name: Install Conda environment with Micromamba
	uses: mamba-org/setup-micromamba@v1
	with:
	environment-file: conda/conda-lock.yml
	environment-name: xarray-tutorial
	cache-environment: true

	- name: Build JupyterBook
	# NOTE: login shell activates conda environment
	shell: bash -el {0}
	run: \|
	jupyter-book build ./ --warningiserror --keep-going

	- name: Dump Build Logs
	if: always()
	run: \|
	if (test -a _build/html/reports/log); then cat _build/html/reports/log ; fi

	- name: Save Build
	if: always()
	uses: actions/upload-artifact@v3
	with:
	name: build
	path: _build/

	- name: Publish to GitHub Pages
	if: github.ref == 'refs/heads/main'
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: _build/html
	publish_branch: gh-pages
	cname: tutorial.xarray.dev
	enable_jekyll: false

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