Fix NVIDIA GPG key issue. (#1151)
Fix NVIDIA GPG key issue. (#1151)

Context: https://github.com/NVIDIA/nvidia-docker/issues/1631

The next `deeplearning-platform-release/tf2-gpu.2-6` should remove the
need for this workaround.

http://b/230864778
Kaggle/docker-python,Kaggle/docker-python