Handle the case where all the image data are in the alpha channel (bug 1975719) #220

	name: Lint Fluent Reference Files
	on:
	push:
	paths:
	- 'l10n/en-US/**.ftl'
	- '.github/fluent_linter_config.yml'
	- '.github/workflows/fluent_linter.yml'
	branches:
	- master
	pull_request:
	paths:
	- 'l10n/en-US/**.ftl'
	- '.github/fluent_linter_config.yml'
	- '.github/workflows/fluent_linter.yml'
	branches:
	- master
	workflow_dispatch:
	permissions:
	contents: read

	jobs:
	lint:
	name: Lint
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Use Python 3.13
	uses: actions/setup-python@v5
	with:
	python-version: '3.13'
	cache: 'pip'

	- name: Install Fluent dependencies
	run: \|
	pip install -r .github/requirements.txt

	- name: Lint Fluent reference files
	run: \|
	moz-fluent-lint ./l10n/en-US --config .github/fluent_linter_config.yml

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