Update Dockerfile

Dockerfile

@@ -1,23 +1,20 @@
 # Use an official Node runtime as a parent image
 FROM node:20
 
-# Set the working directory in the container
-WORKDIR /usr/src/app
+# Set the working directory inside the container to /app.
+WORKDIR /app
 
-# Copy package.json and package-lock.json (or npm-shrinkwrap.json) files
-COPY package*.json ./
+# Copy the package.json and package-lock.json (if available) files into the container.
+COPY package.json package-lock.json* ./
 
-# Install any needed packages specified in package.json
-RUN npm install
+# Install the project dependencies.
+RUN npm install 
 
-# Bundle the app's source code inside the Docker image
+# Copy the rest of the application code into the container.
 COPY . .
 
-# Make port 3000 available to the world outside this container
-EXPOSE 7860
+# Expose port 3000 to have it mapped by Docker daemon
+EXPOSE 3000
 
-# Define environment variable
-ENV NODE_ENV=production
-
-# Run the app when the container launches
+# Command to run when starting the container
 CMD ["node", "server.js"]