Update README.md to include prebuilt docker image

Author: bedaberner

README.md

@@ -29,6 +29,15 @@ npm test
 
 # Docker
 
+run the prebuilt docker image:
+
+``` bash
+docker run -p 8080:8080 -d ghcr.io/ArduPilot/UAVLogViewer:latest
+
+```
+
+or build the docker file locally:
+
 ``` bash
 
 # Build Docker Image
@@ -45,4 +54,4 @@ docker logs <container id>
 
 # Navigate to localhost:8080 in your web browser
 
-```
+```