docs: Add architecture.png architecture diagram to README #7

	name: CI/CD Pipeline

	on:
	push:
	branches: [ main, develop ]
	pull_request:
	branches: [ main, develop ]

	jobs:
	backend-test:
	name: Backend Tests
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Setup Node.js
	uses: actions/setup-node@v3
	with:
	node-version: '18'

	- name: Install dependencies
	working-directory: ./backend
	run: npm install

	- name: Run linter
	working-directory: ./backend
	run: npm run lint --if-present

	- name: Run tests
	working-directory: ./backend
	run: npm test --if-present

	frontend-test:
	name: Frontend Tests
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Setup Node.js
	uses: actions/setup-node@v3
	with:
	node-version: '18'

	- name: Install dependencies
	working-directory: ./frontend
	run: npm install

	- name: Run linter
	working-directory: ./frontend
	run: npm run lint --if-present

	- name: Run tests
	working-directory: ./frontend
	run: npm test --if-present

	- name: Build frontend
	working-directory: ./frontend
	run: npm run build

	docker-build:
	name: Docker Build Test
	runs-on: ubuntu-latest
	needs: [backend-test, frontend-test]

	steps:
	- uses: actions/checkout@v3

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2

	- name: Build backend Docker image
	uses: docker/build-push-action@v4
	with:
	context: ./backend
	file: ./backend/Dockerfile
	push: false
	tags: attendance-backend:latest

	- name: Build frontend Docker image
	uses: docker/build-push-action@v4
	with:
	context: ./frontend
	file: ./frontend/Dockerfile
	push: false
	tags: attendance-frontend:latest

Provide feedback