add ci.yml to source (so it runs when we change it) #159

	name: Deploy docs to GitHub Pages

	on:
	push:
	branches:
	- main

	jobs:
	deploy:
	name: Deploy docs
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Set up git username and address
	run: \|
	git config user.name github-actions[bot]
	git config user.email 41898282+github-actions[bot]@users.noreply.github.com

	- name: Install Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'

	- name: Set cache key
	run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV

	- name: Handle cache
	uses: actions/cache@v3
	with:
	key: mkdocs-material-${{ env.cache_id }}
	path: .cache
	restore-keys: \|
	mkdocs-material-

	- name: Install MkDocs dependencies
	run: pip install -r requirements.docs.txt

	- name: Deploy to GitHub Pages
	run: mkdocs gh-deploy --force

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