Introduce sphinx workflow #1

	# yaml-language-server: $schema=https://json.schemastore.org/github-workflow

	name: "Sphinx"

	on: # yamllint disable-line rule:truthy
	pull_request:
	paths:
	- "*/.rst"
	push:
	branches:
	- "master"
	paths:
	- "*/.rst"
	workflow_call: null
	# Add [skip ci] to commit message to skip CI.

	permissions: {} # yamllint disable-line rule:braces
	#permissions: "read-all"
	#permissions:
	# contents: "read" # Private repositories need read permission

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

	jobs:
	sphinx:
	name: "Sphinx reStructuredText validity"
	runs-on: "ubuntu-22.04"
	timeout-minutes: 1
	steps:
	-
	name: "Checkout repository"
	uses: "actions/[email protected]"
	-
	name: "Cache pip"
	uses: "actions/[email protected]"
	with:
	path: "~/.cache/pip"
	key: "${{ runner.os }}-pip-sphinx-lint"
	-
	name: "Install sphinx-lint"
	run: \|
	pip install --user sphinx-lint
	-
	name: "Check Sphinx document sources"
	run: \|
	git ls-files --cached -z -- '*.rst' \
	\| xargs --null -- python -m sphinxlint --enable all --max-line-length 120

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