Set the `LANGUAGE` environment variable in the Docker backend #3031

	name: Documentation
	on:
	push:
	branches:
	- main
	paths:
	- 'docs/**'
	# Build pull requests
	pull_request:
	paths:
	- 'docs/**'
	- 'styles/**'

	jobs:
	docs:
	name: Documentation
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.12']
	steps:
	- uses: actions/checkout@v4

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	cache-dependency-path: 'requirements-docs.txt'

	- name: Create Python virtual environment
	run: pip install virtualenv

	- name: pip install requirements
	run: \|
	pip install -r requirements-docs.txt
	sudo snap install --edge vale

	- name: Check for broken links
	run: make docs-linkcheckbroken

	- name: Build HTML documentation
	run: make docs-html

	- name: Run vale
	run: \|
	git clone https://github.com/errata-ai/Microsoft.git
	cp -r ./Microsoft/Microsoft ./styles
	vale --no-exit ./docs

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