Add first version of docs #3

	name: Documentation

	on:
	pull_request:
	types: [opened, reopened, synchronize, ready_for_review]
	paths:
	- "docs/**"

	jobs:
	# Just check that the build works and doesn't throw any errors
	# The actual build and deployment is done on the main branch
	# with another GitHub Actions workflow.
	build:
	name: Build
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: docs
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: '3.1'
	bundler-cache: true # runs 'bundle install' and caches installed gems automatically
	cache-version: 0 # Increment this number if you need to re-download cached gems
	working-directory: '${{ github.workspace }}/docs'

	- name: Build with Jekyll
	run: bundle exec jekyll build

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