Update for backend

Author: Speedrunyourknowledge

DOCKER_INFO.md

@@ -1,15 +1,15 @@
 ## Docker Images
 
 ### Frontend
-The image **emeraldkeys/calc-visualizer-frontend** runs a Vite server on port 5173. This displays the website's frontend. The associated dockerfile is in /calc-frontend.
-This is the development version, which contains the original files before they are assembled into the final javascript bundle.
+The image **emeraldkeys/calc-visualizer-backend** runs the backend server on port 3000. . The associated dockerfile is in /calc-backend. 
+This is the production build.
 
 Commands to run the image on your computer:
 ```
-docker pull emeraldkeys/calc-visualizer-frontend:latest      
-docker run -d --name=calc-frontend -p 5173:5173 emeraldkeys/calc-visualizer-frontend:latest
+docker pull emeraldkeys/calc-visualizer-backend:latest      
+docker run -d --name=calc-backend -p 3000:3000 emeraldkeys/calc-visualizer-backend:latest
 
 ```
-You can access the server on http://localhost:5173
+You can send requests to the server on http://localhost:3000
 
 When you run the image, a new docker container is created on your computer. You can choose to delete old containers before creating a new one.