Update Dockerfile

Dockerfile

@@ -88,8 +88,11 @@ USER node
 # Set the working directory (good practice)
 RUN ngrok config add-authtoken $NGROK_AUTHTOKEN
 
+
 # Expose the port the app runs on
 EXPOSE 7860
 USER root
+RUN npm install -g express ejs chart.js && npm cache clean --force
+
 # Define the command to run the application
 CMD ["npm", "run", "backend"]