Add a build image workflow #10

	name: Backend Check

	on:
	push:
	branches:
	- 'main'
	paths:
	- 'backend/**.py'
	- 'backend/requirements.'
	- 'backend/pyproject.toml'
	- 'Dockerfile*'
	- 'docker-compose*.yml'
	- '.github/workflows/backend_check.yml'
	pull_request:
	branches:
	- 'main'
	paths:
	- 'backend/**.py'
	- 'backend/requirements.'
	- 'backend/pyproject.toml'
	- 'Dockerfile*'
	- 'docker-compose*.yml'
	- '.github/workflows/backend_check.yml'

	jobs:
	static_analysis:
	name: Run static analysis
	runs-on: ubuntu-latest
	steps:
	- name: Check out Git repository
	uses: actions/checkout@v3

	- name: Set up Python 3.11
	uses: actions/setup-python@v4
	with:
	python-version: 3.11
	cache: 'pip'

	- name: Cache pip
	uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements-dev.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install Black & Ruff with latest pip
	run: \|
	python -m pip install --upgrade pip
	cat ./backend/requirements-dev.txt \| grep black== \| cut -d' ' -f1 \| xargs pip install
	cat ./backend/requirements-dev.txt \| grep ruff== \| cut -d' ' -f1 \| xargs pip install

	- name: Lint files using Ruff
	run: \|
	ruff check ./backend

	- name: Check formatting with Black
	run: \|
	black --check ./backend

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