Lint

Document disp_bg_opa and `none` for `disp_bg_image` (#4545) #15851

	name: Lint

	on:
	push:
	# On other branches the `pull_request` trigger will be used
	branches: [current, next]

	pull_request:
	types: [opened, edited, reopened, synchronize]

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Install pagefind
	uses: jaxxstorm/[email protected]
	with:
	repo: cloudcannon/pagefind
	- uses: actions/[email protected]
	- name: Set up Python 3.12
	uses: actions/setup-python@v5
	with:
	python-version: 3.12
	- name: Install dependencies
	run: pip install -r requirements.txt -r requirements_test.txt
	- name: Register problem matchers
	run: \|
	echo "::add-matcher::.github/workflows/matchers/ci-custom.json"

	- name: Lint
	run: python lint.py
	- name: html-strict
	run: make html-strict

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