docs: Revise README formatting and content for clarity #9

	name: Auth Mailer API CI

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

	# Esto le dice a GitHub que entre a la carpeta email-api para ejecutar todo
	defaults:
	run:
	working-directory: email-api

	jobs:
	build-and-test:
	runs-on: ubuntu-latest

	services:
	postgres:
	image: postgres:latest
	env:
	POSTGRES_USER: user_test
	POSTGRES_PASSWORD: password_test
	POSTGRES_DB: auth_mailer_test
	ports:
	- 5432:5432
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5

	steps:
	- uses: actions/checkout@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'npm'
	# Aquí también ajustamos la ruta del lock file
	cache-dependency-path: email-api/package-lock.json

	- name: Install dependencies
	run: npm install

	- name: Run Tests
	env:
	DATABASE_URL: postgres://user_test:password_test@localhost:5432/auth_mailer_test
	SECRET_KEY: ${{ secrets.SECRET_KEY }}
	SENDGRID_API_KEY: ${{ secrets.SENDGRID_API_KEY }}
	EMAIL: ${{ secrets.EMAIL }}
	NODE_ENV: test
	run: npm test

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