Tidy up dockerfile #130

	name: Code Formatting

	on:
	push:
	branches-ignore:
	- main
	pull_request:
	types:
	- opened
	- ready_for_review
	- reopened

	jobs:
	ci:
	runs-on: 'ubuntu-latest'
	name: PR Formatter

	steps:
	- name: Checkout repo
	uses: actions/checkout@v3

	- name: Install python
	uses: actions/setup-python@v3
	with:
	python-version: '3.9'

	- name: Format the code
	uses: psf/black@stable
	with:
	options: "--check --diff"
	src: "."

	- name: Check-in updated code
	uses: EndBug/add-and-commit@v9
	with:
	default_author: github_actions
	committer_name: GitHub Actions
	committer_email: [email protected]
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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