Work on gazebo dockers.

doc/docker_interfacing.md

@@ -154,7 +154,10 @@ wexec roslaunch lrs_launch config.launch location:=granso no_airspace_booking:=t
 
 ### Starting Gazebo using Docker (optionally)
 
-If you have an NVIDIA graphics card and support for that in docker, then you can if needed start gazebo (assuming that the container was already started with wgrun):
+If you have an NVIDIA graphics card and support for that in docker,
+then you can if needed start gazebo (assuming that the container was
+already started with wgrun and that the NVIDIA driver on the host
+machine is 470.141.03 (check with nvidia-smi)):
 
 ```bash
 # Run roslaunch inside the docker container