init rework on tutorials #471


	name: Build & Deploy

	on:
	push:
	branches: ["gh_pages"]
	pull_request:
	branches: ["gh_pages"]
	workflow_dispatch:

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

	concurrency:
	group: "pages-${{ github.ref }}"
	cancel-in-progress: true

	jobs:
	# Build job
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 20 #fetch the last 20 commits to get mtimes from
	lfs: true
	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	bundler-cache: true
	cache-version: 0 # Increment this number if you need to re-download cached gems
	- name: Setup Pages
	id: pages
	uses: actions/configure-pages@v3
	- name: restore files mtime
	run: \|
	sudo apt -qqy update
	sudo apt -qqy install git-restore-mtime
	git restore-mtime
	- name: Build with Jekyll
	run: bundle exec jekyll build
	env:
	JEKYLL_ENV: production
	- name: test HTML validity
	run: >
	bundle exec htmlproofer _site/
	--disable-external true
	--enforce-https false
	--allow-missing-href=true
	--log-level :debug
	- name: Upload artifact
	if: ${{ github.ref == 'refs/heads/gh_pages' }}
	uses: actions/upload-pages-artifact@v1

	# Deployment job
	deploy:
	if: ${{ github.ref == 'refs/heads/gh_pages' }}
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	runs-on: ubuntu-latest
	needs: build
	steps:
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v1

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