Fix linting errors #331

	name: Backend CI

	on:
	push:
	branches:
	- "**"
	paths:
	- 'backend/**'
	- .github/workflows/ci-backend.yml

	jobs:
	qa:
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./backend

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: 3.9
	- name: Configure cache
	id: python-cache
	uses: actions/cache@v2
	if: startsWith(runner.os, 'Linux') && ${{ !env.ACT }}
	with:
	path: \|
	${{ env.pythonLocation}}
	key: v2-${{ runner.os }}-${{ hashFiles('*/requirements.txt') }}
	- name: Install deps using Pip
	run: pip install -r requirements-dev.txt
	if: steps.python-cache.outputs.cache-hit != 'true'
	- name: Run linting checks
	run: \|
	isort scaife_stack_atlas -rc --check-only
	black scaife_stack_atlas --check
	flake8 scaife_stack_atlas
	- name: Run tests
	run: pytest

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