Use --load to avoid error on linux

shell_scripts/start_docker.sh

@@ -9,10 +9,10 @@ fi
 # Build the Docker container using buildx
 # Refer to MacOS (Colima) steps here to install buildx: 
 # https://github.com/abiosoft/colima/blob/main/docs/FAQ.md#installing-buildx
-docker buildx build -t purple-a11y-tests -f Dockerfile .
+docker buildx build --load -t purple-a11y-tests -f Dockerfile .
 
 # List Docker images
-docker image ls
+# docker image ls
 
 # Add hostname mappings and run the container
 docker run -dit --name purple-a11y-tests-instance --add-host=main.purplea11y.local:0.0.0.0 --add-host=diffHostname.purplea11y.local:0.0.0.0 --add-host=docs.google.com:0.0.0.0 purple-a11y-tests