Build documentation #640

	name: Build documentation

	on:
	workflow_call:
	inputs:
	tag:
	description: "Tag of DOLFINx docker image"
	default: "nightly"
	required: true
	type: string
	workflow_dispatch:
	inputs:
	tag:
	description: "Tag of DOLFINx docker image"
	default: "nightly"
	required: true
	type: string
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	schedule:
	- cron: "0 8 * * *"

	env:
	DEB_PYTHON_INSTALL_LAYOUT: deb_system
	DEFAULT_TAG: nightly
	ARTIFACT_NAME: docs
	PUBLISH_DIR: ./_build/html

	jobs:
	get_image_tag:
	runs-on: ubuntu-latest
	outputs:
	image: ${{ steps.docker_tag.outputs.image }}
	steps:
	- id: docker_tag
	run: echo "image=${{ inputs.tag \|\| env.DEFAULT_TAG }}" >> $GITHUB_OUTPUT

	build-docs:
	needs: get_image_tag
	runs-on: ubuntu-latest
	container: ghcr.io/fenics/dolfinx/dolfinx:${{ needs.get_image_tag.outputs.image }}

	steps:
	# This action sets the current path to the root of your github repo
	- uses: actions/checkout@v4

	- name: Update pip
	run: python3 -m pip install --break-system-packages --upgrade pip setuptools

	- name: Install dependencies
	run: python3 -m pip install --break-system-packages -e ".[docs]"

	- name: Build docs
	run: jupyter book build -W .

	- name: Upload documentation as artifact
	uses: actions/upload-artifact@v4
	if: always()
	with:
	name: ${{ env.ARTIFACT_NAME }}
	path: ${{ env.PUBLISH_DIR }}
	if-no-files-found: error

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