updated the dockerfile

Dockerfile

@@ -3,7 +3,36 @@ FROM node:18-alpine
 WORKDIR /app
 
 COPY package.json .
-RUN npm install
+RUN npm installFROM node:18-alpine as build
+
+WORKDIR /app
+
+# Copy package files and install dependencies
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# Copy all files
+COPY . .
+
+# Build the application
+RUN npm run build
+
+# Production stage
+FROM node:18-alpine as production
+
+WORKDIR /app
+
+# Install serve globally
+RUN npm install -g serve
+
+# Copy built files from build stage
+COPY --from=build /app/dist ./dist
+
+EXPOSE 3000
+
+# Use the -s flag to handle SPA routing
+CMD ["serve", "-s", "dist", "-l", "3000"]
+
 RUN npm install -g serve
 
 COPY . .