DEMO: Update README.md for the Docker image

demo/README.md

@@ -1,7 +1,19 @@
 # Demo Instructions
 
+## Building the Docker image:
+
+To be able to use the demo, do the following to have a working docker image. This command will be ran in the demo directory to build the Groundr Docker image using the provided Dockerfile.
+
+ docker build scripts -t groundr
+
+If you would like to test the Docker image, the following command can be run, replacing all instances of 5000 with whatever port you want the Docker image to use.
+
+ docker run -p 5000:5000 -it groundr /root/start.sh 0.0.0.0 5000
+
+## Launching the demo:
+
 Launch demo.py in this folder, giving it an IP and port to host on if needed:
 
  python demo.py <ip> <port>
 
-The defaults are IP 0.0.0.0 and port 80, which you can connect to by either entering localhost into your browser, or the IP of the server.
+The defaults are IP 0.0.0.0 and port 80, which you can connect to by either entering localhost into your browser, or the IP of the server.