update README.md #4

	name: CodeChat Docker Image CI

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

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Get package version
	id: get_version
	run: echo "::set-output name=version::$(jq -r .version package.json)"

	- name: Debug Pre-Build Information
	run: \|
	docker run --rm node:latest node -v
	docker run --rm node:latest npm -v
	docker run --rm node:latest git --version

	- name: Build and tag Docker image
	run: \|
	docker build . --file Dockerfile --tag codechat/api:${{ steps.get_version.outputs.version }}
	docker tag codechat/api:${{ steps.get_version.outputs.version }} codechat/api:latest

	- name: Login to Docker Hub
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

	- name: Push Docker image to Docker Hub
	run: docker push codechat/api:latest

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