updated dockerfile

Dockerfile

@@ -1,27 +1,22 @@
-# Use an official Node.js runtime as a parent image.
-# Using the 'alpine' variant for a smaller image size.
+# Use a stable and small Node.js image
 FROM node:18-alpine
 
 # Set the working directory inside the container
 WORKDIR /app
 
-# Copy package.json and package-lock.json to leverage Docker cache
+# Copy package files and install dependencies first to leverage Docker's layer caching
 COPY package*.json ./
-
-# Install app dependencies
 RUN npm install
 
-# Copy the rest of your application's code into the container
-# This includes index.js, the 'views' directory, and the 'dist' directory
+# Copy the rest of your application code
 COPY . .
 
-# Your Express app listens on port 3000
-EXPOSE 3000
+# Expose the port that Hugging Face Spaces expects
+EXPOSE 7860
 
-# Metadata for Hugging Face Spaces
-# This tells Spaces that the app is a web application running on port 3000
-LABEL "app_port"="3000"
+# Metadata for Hugging Face Spaces to identify the running application port
+LABEL "app_port"="7860"
 LABEL "app_file"="index.js"
 
-# The command to run your application
+# The command to start your Express server
 CMD ["node", "index.js"]