Add workflow to build technical documentation using full website #25

	name: Build technical documentation
	on:
	pull_request:
	paths: ["docs/sources/**"]
	workflow_dispatch:
	jobs:
	main:
	runs-on: ubuntu-latest
	container:
	image: grafana/docs-base:latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Generate GitHub token
	id: generate-token
	uses: tibdex/github-app-token@v1
	with:
	app_id: ${{ secrets.GRAFANA_DELIVERY_BOT_APP_ID }}
	private_key: ${{ secrets.GRAFANA_DELIVERY_BOT_APP_PEM }}

	- name: Sparse clone website repository
	run: \|
	git clone --filter=blob:none --no-checkout --sparse --depth 1 https://x-access-token:${TOKEN}@github.com/grafana/website.git website
	git -C website sparse-checkout set content/docs
	git -C website checkout master
	env:
	TOKEN: ${{ steps.generate-token.outputs.token }}

	- name: Checkout Actions library
	uses: actions/checkout@v3
	with:
	repository: grafana/grafana-github-actions
	path: ./actions

	- name: Install Actions from library
	run: npm install --production --prefix ./actions

	- name: Determine technical documentation version
	uses: ./actions/docs-target
	id: target
	with:
	ref_name: ${{ github.base_ref }}

	- name: Build website
	# Note that busybox `ln` does not have the `-F` option.
	run: \|
	rm -rf /hugo/content/docs
	ln -sn "$(pwd)/website/content/docs" /hugo/content/docs
	rm -rf "/hugo/content/docs/grafana/${TARGET}"
	ln -sn "$(pwd)/docs/sources" "/hugo/content/docs/grafana/${TARGET}"
	cd /hugo
	unset WEBSITE_SKIP_MOUNTS
	make hugo HUGO_ENV=docs \| grep docs/grafana/
	env:
	TARGET: ${{ steps.target.outputs.target }}

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