Refactor chapter_05 pattern to pass mypy and flake8 checks #12

	name: Design patterns

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.11"]

	steps:
	- uses: actions/checkout@v4

	- name: Install Python
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install poetry
	uses: abatilo/actions-poetry@v2

	- name: Install dependencies
	run: poetry install --with dev

	- name: flake8 lint
	run: poetry run flake8

	- name: mypy type check
	run: poetry run mypy .

	- name: Test with pytest
	run: poetry run pytest

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