Update Dockerfile and package.json for proper TypeScript build and deployment

Dockerfile

@@ -1,5 +1,7 @@
-FROM node:18-alpine
+# Build stage
+FROM node:18-alpine AS builder
 
+# Set working directory
 WORKDIR /app
 
 # Copy package files
@@ -12,10 +14,30 @@ RUN cd frontend && npm install
 
 # Copy source files
 COPY . .
+COPY frontend ./frontend
 
 # Build frontend
 RUN cd frontend && npm run build
 
+# Build backend
+RUN npm run build
+
+# Production stage
+FROM node:18-alpine
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install production dependencies only
+RUN npm install --production
+
+# Copy built files from builder stage
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/frontend/build ./frontend/build
+
 # Expose port
 EXPOSE 3000