docs: info on setup with Nix flakes #30

	name: Deploy Rustemo book to Pages

	on:
	push:
	branches: ["main"]
	paths:
	- 'docs/**'
	- '.github/workflows/book.yml'

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# Allow one concurrent deployment
	concurrency:
	group: "pages"
	cancel-in-progress: true



	jobs:
	# Single deploy job since we're just deploying
	deploy-book:
	runs-on: ubuntu-latest

	# Grant GITHUB_TOKEN the permissions required to make a Pages deployment
	permissions:
	pages: write # to deploy to Pages
	id-token: write # to verify the deployment originates from an appropriate source

	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: true

	- uses: cachix/install-nix-action@v27
	with:
	nix_path: nixpkgs=channel:nixos-unstable
	- uses: DeterminateSystems/magic-nix-cache-action@v6

	- name: Build book
	shell: bash
	run: \|
	cd docs
	nix build -o book

	- name: Setup Pages
	uses: actions/configure-pages@v2
	- name: Upload artifact
	uses: actions/upload-pages-artifact@v1
	with:
	path: 'docs/book/html'
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v1

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