Add workflows for ghcr build #3

	on: [push, pull_request]

	name: "Backend CI"

	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-node@v1
	with:
	node-version: 16
	- name: Install dependencies
	run: npm install
	working-directory: backend
	- name: Build
	run: npm run build
	working-directory: backend

	docker:
	runs-on: ubuntu-latest
	needs:
	- build
	permissions:
	packages: write
	steps:
	- uses: actions/checkout@v3
	- name: Set up Docker Buildx
	id: buildx
	uses: docker/setup-buildx-action@v2
	- name: Login to GitHub Container Registry
	if: ${{ github.ref == 'refs/heads/main' }}
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Build and push
	id: docker_build
	uses: docker/build-push-action@v2
	with:
	context: ./backend
	file: ./backend/Dockerfile
	push: ${{ github.ref == 'refs/heads/main' }}
	tags: ghcr.io/cthit/bookIT-node-backend:latest

Provide feedback