Fix Dockerfile to use npm start and add start script

Dockerfile

@@ -16,9 +16,9 @@ FROM node:20-alpine
 
 WORKDIR /app
 
-# Copy package.json and install ONLY production dependencies (server deps)
+# Copy package.json and install ONLY production dependencies
 COPY package*.json ./
-RUN npm ci --only=production
+RUN npm ci --omit=dev
 
 # Copy built frontend assets
 COPY --from=builder /app/dist ./dist
@@ -30,4 +30,4 @@ COPY server.js ./
 EXPOSE 3000
 
 # Start server
-CMD ["node", "server.js"]
+CMD ["npm", "start"]

package.json

@@ -6,6 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
+    "start": "node server.js",
     "lint": "eslint .",
     "preview": "vite preview"
   },