DMV-CNN build fails on apt-get update

[jwitos]

Step 1/17 : FROM nvidia/cuda:10.1-base-ubuntu18.04
 ---> 63d871da0034
Step 2/17 : RUN apt-get update && apt-get install -y libglib2.0-0    libsm6     libxext6     libxrender-dev     zlib1g-dev     libjpeg-dev     vim     git     bash     wget     python3.6     python3-pip     && rm -rf /var/lib/apt/lists/*
 ---> Running in 7b289bbffb91

[...]

Get:23 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Packages [73.8 kB]
Reading package lists...
W: GPG error: https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A4B469963BF863CC
E: The repository 'https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease' is not signed.
The command '/bin/sh -c apt-get update && apt-get install -y libglib2.0-0    libsm6     libxext6     libxrender-dev     zlib1g-dev     libjpeg-dev     vim     git     bash     wget     python3.6     python3-pip     && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 100

[jwitos]

Relevant threads:
NVIDIA/nvidia-container-toolkit#258
NVIDIA/nvidia-container-toolkit#257

will push the fix momentarily