Merge pull request #1 from cloudsmithy/main #1

	name: Build and Push Docker Image

	# ✅ 任何 push 都触发（如果只想 main 分支触发，就把 branches 列表写出来）
	on:
	push: # ← 去掉 tags 过滤器
	branches: [main] # 想限定就取消注释

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

	steps:
	- name: Checkout source code
	uses: actions/checkout@v4

	- name: Check DockerHub secrets
	run: \|
	if [ -z "${{ secrets.DOCKER_USERNAME }}" ] \|\| [ -z "${{ secrets.DOCKER_PASSWORD }}" ]; then
	echo "❌ ERROR: DOCKER_USERNAME or DOCKER_PASSWORD is missing"
	exit 1
	fi

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	with:
	install: true

	- name: Docker login
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

	# --- ① 生成镜像 tag：用提交短 SHA（7 位） ---
	- name: Set image tag
	run: echo "TAG=${GITHUB_SHA::7}" >> "$GITHUB_ENV"

	- name: Build & push multi-arch image
	uses: docker/build-push-action@v5
	with:
	context: .
	push: true
	platforms: linux/amd64,linux/arm64
	tags: \|
	${{ secrets.DOCKER_USERNAME }}/smart-shopping-app:latest

	# --- 若你只想保留 latest，可以直接去掉 TAG 相关步骤 ---

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