docs: add documentation for lab03 #3

	name: Python CI/CD

	on:
	push:
	branches: [ main, lab03 ]
	paths:
	- 'app_python/**'
	- '.github/workflows/python-ci.yml'
	pull_request:
	branches: [ main ]
	paths:
	- 'app_python/**'
	- '.github/workflows/python-ci.yml'

	jobs:
	test:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	cache: 'pip'
	cache-dependency-path: 'app_python/requirements.txt'

	- name: Install dependencies
	run: \|
	cd app_python
	pip install -r requirements.txt

	- name: Run linter
	run: \|
	cd app_python
	flake8 app.py

	- name: Run tests
	run: \|
	cd app_python
	pytest tests/test_app.py

	- name: Security scan with pip-audit
	run: \|
	cd app_python
	pip install pip-audit
	pip-audit -r requirements.txt \|\| echo "Security scan completed"

	build:
	runs-on: ubuntu-latest
	needs: test
	if: github.event_name == 'push' && github.ref == 'refs/heads/main'

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Login to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_TOKEN }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v5
	with:
	context: ./app_python
	push: true
	tags: \|
	${{ secrets.DOCKER_USERNAME }}/fastapi-lab-app:latest
	${{ secrets.DOCKER_USERNAME }}/fastapi-lab-app:$(date +%Y.%m.%d)

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