docs: add instructions for the backend #32

	name: backend pipeline

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

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

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Use Node.js 16.x
	uses: actions/setup-node@v2
	with:
	node-version: 16.x
	cache: 'npm'

	- name: Install dependencies
	run: npm ci

	- name: Dummy Test Step
	run: npm run test

	deploy:
	needs: build-and-test
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

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

	- name: Login to Docker Hub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_TOKEN }}

	- name: Build and Deliver Docker Image
	uses: docker/build-push-action@v4
	with:
	context: .
	push: true
	platforms: linux/amd64,linux/arm64/v8
	tags: random9deploy/movies-backend:${{ github.run_number }}

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