Update Dockerfile

Dockerfile

@@ -13,8 +13,11 @@ RUN npm install --production
 # Copy the rest of the application code to the container
 COPY . .
 
-# Expose the port your app will run on
+# Set environment variable to production
+ENV NODE_ENV=production
+
+# Expose the port Hugging Face uses
 EXPOSE 3000
 
-# Command to start the app
+# Start the app using the port Hugging Face will bind to
 CMD ["npm", "start"]