restructure Dockerfiles; CI: lint, validate, build & publish #10

	name: lint

	on:
	push:
	branches:
	- '*'
	pull_request:
	branches:
	- '*'
	# make workflow "callable" by others
	workflow_call:

	jobs:
	lint:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version:
	- '3'
	- '3.8' # used by some NVBW infrastructure
	steps:
	- name: checkout
	uses: actions/checkout@v3
	- name: setup Python v${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'

	- name: pip install
	run: pip install -r requirements.txt -r requirements-dev.txt

	- name: lint using ruff
	# We could also use the official GitHub Actions integration.
	# https://beta.ruff.rs/docs/usage/#github-action
	# uses: chartboost/ruff-action@v1
	run: ruff check --format=github .

	- name: format using black
	# We could also use the official GitHub Actions integration.
	# https://black.readthedocs.io/en/stable/integrations/github_actions.html
	# uses: uses: psf/black@stable
	run: \|
	black -S --check --diff .

	- name: type-check using mypy
	run: \|
	mypy .

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