Update VPN docs now that we've moved to Proton #454

	name: "Build GitHub Pages"

	on: push

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	Build-GitHub-Pages:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4

	- name: Install apt dependencies
	run: \|
	sudo ./install-apt-deps.sh

	- uses: actions/setup-node@v4
	with:
	# Be sure to keep this in sync with .tugboat/config.yml.
	node-version: 18

	- name: Get yarn cache directory path
	id: yarn-cache-dir-path
	run: echo "::set-output name=dir::$(yarn cache dir)"

	- uses: actions/cache@v4
	id: yarn-cache
	with:
	path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
	key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
	restore-keys: \|
	${{ runner.os }}-yarn-

	- name: Install dependencies
	run: \|
	yarn install

	- name: Check spelling
	run: \|
	yarn spellcheck

	- name: Build Website
	run: \|
	yarn build

	- name: Build PDF
	run: \|
	sudo ./install-calibre.sh
	yarn pdf
	mv book.pdf _book/security.pdf
	rm _book/.gitignore

	- name: Archive build results
	uses: actions/upload-artifact@v4
	with:
	name: _book
	path: _book

	Publish-GitHub-Pages:
	runs-on: ubuntu-20.04
	needs: [Build-GitHub-Pages]
	if: github.ref == 'refs/heads/main'

	steps:
	- name: Download built book
	uses: actions/download-artifact@v4
	with:
	name: _book

	- name: Confirm artifacts
	run: ls -R

	- name: Deploy
	uses: peaceiris/actions-gh-pages@v4
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: .
	exclude_assets: '.github,build.sh,CONTRIBUTING.md,install-calibre.sh,Dockerfile,package.json,yarn.lock,renovate.json,.tugboat,.gitignore'

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