change: dockerfile multistage build

.dockerignore

@@ -1 +1,5 @@
-node_modules
+dev-dist
+dist
+node_modules
+.github
+push.sh

.github/workflows/main.yml

@@ -0,0 +1,53 @@
+# Nama workflow
+name: Excel Reader App CI/CD
+
+on:
+  push:
+    branches:
+      - main
+
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '16'
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Build project
+      run: npm run build
+
+  deploy:
+    name: Deploy DockerHub
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Login to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+
+    - name: Build and push Docker image
+      env:
+        DOCKER_IMAGE: ${{ secrets.DOCKER_USERNAME }}/vitets-excel-reader
+      run: |
+        docker build -t $DOCKER_IMAGE .
+        docker push $DOCKER_IMAGE

Dockerfile

@@ -1,15 +1,17 @@
-FROM node:18-alpine
-
-WORKDIR /app
-
-COPY package.json .
-
-RUN npm install
-
-COPY . .
-
-RUN npm run build
-
-EXPOSE 8080
-
-CMD [ "npm", "run", "preview" ]
+# ---- Build Stage ----
+    FROM node:latest AS build
+    WORKDIR /app
+    COPY package.json .
+    RUN npm install
+    COPY . .
+    RUN npm run build
+
+    # ---- Runtime Stage ----
+    FROM node:22-alpine
+    WORKDIR /app
+    # Install serve globally
+    RUN npm install -g serve
+    COPY --from=build /app/dist /app/dist
+
+    EXPOSE 8080
+    CMD ["serve", "-s", "dist", "-l", "8080"]