Update docker-image.yml #3

	name: Docker Image CI

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

	jobs:
	build-backend:
	runs-on: ubuntu-latest

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

	# JDK 17 설치
	- name: Set up JDK 17
	uses: actions/setup-java@v3
	with:
	java-version: '17'
	distribution: 'temurin' # Temurin JDK 배포판 사용

	# Gradlew 실행 권한 부여
	- name: Grant execute permission for gradlew
	working-directory: ./backend
	run: \|
	chmod +x gradlew

	# Gradle 빌드
	- name: Gradle Build
	working-directory: ./backend
	run: \|
	./gradlew build

	# Docker 이미지 빌드
	- name: Build Backend Docker image
	working-directory: ./backend
	run: \|
	docker build -t my-dockerhub-username/backend:latest .

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

	- name: Push Backend Docker image to Docker Hub
	run: \|
	docker push my-dockerhub-username/backend:latest

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