docker changes

Dockerfile

@@ -1,6 +1,16 @@
 FROM node:18-alpine
+
+# Set the working directory
 WORKDIR /app
+
+# Copy application code to the container
 COPY . .
+
+# Install dependencies
 RUN yarn install --production
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Command to run the application
 CMD ["node", "src/index.js"]
-EXPOSE 3000