cleanup - lessons and add activity 3 concepts to slides #212

	name: Build & Publish Lessons

	on:
	pull_request:
	push:
	branches:
	- main

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

	jobs:
	build-book:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Setup Pages
	uses: actions/configure-pages@v5

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.11"
	cache: "pip"


	- name: Install dependencies
	run: python3 -m pip install nox

	- name: Build book
	run: nox -s docs-test

	# Save html as artifact for CircleCI viewing
	- name: Save book html as artifact for viewing
	uses: actions/upload-artifact@v4
	# Run even if the docs-test step fails, but not if we cancel
	if: ${{ ! cancelled() }}
	with:
	name: book-html
	path: \|
	_build/html/

	- name: Upload gh pages artifact
	uses: actions/upload-pages-artifact@v3
	if: github.ref == 'refs/heads/main'
	with:
	path: _build/html

	# Test for bad links and ensure alt tags for usability
	- name: Check HTML using htmlproofer
	uses: chabad360/htmlproofer@master
	with:
	directory: "_build/html"
	arguments: \|
	--ignore-files "/.+\/_static\/.+/,/genindex.html/"
	--ignore-status-codes "404, 403, 429, 503"
	continue-on-error: true

	deploy:
	runs-on: ubuntu-latest
	needs: build-book
	if: github.ref == 'refs/heads/main'
	steps:
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v4

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