Update example for codebase runner cuda, x86_64

The latest tag for image nvidia:cuda is deprecated and not available any longer:

https://hub.docker.com/r/nvidia/cuda

Deprecated: "latest" tag

The "latest" tag for CUDA, CUDAGL, and OPENGL images has been deprecated on NGC and Docker Hub.

With the removal of the latest tag, the following use case will result in the "manifest unknown" error:

$ docker pull nvidia/cuda
Error response from daemon: manifest for nvidia/cuda:latest not found: manifest unknown: manifest
unknown

This is not a bug.