OK
+ curl -s -L https://nvidia.github.io/nvidia-docker/ubuntu20.04/nvidia-docker.list
+ sudo tee /etc/apt/sources.list.d/nvidia-docker.list
deb https://nvidia.github.io/libnvidia-container/stable/ubuntu18.04/$(ARCH) /
#deb https://nvidia.github.io/libnvidia-container/experimental/ubuntu18.04/$(ARCH) /
deb https://nvidia.github.io/nvidia-container-runtime/stable/ubuntu18.04/$(ARCH) /
#deb https://nvidia.github.io/nvidia-container-runtime/experimental/ubuntu18.04/$(ARCH) /
deb https://nvidia.github.io/nvidia-docker/ubuntu18.04/$(ARCH) /
+ sudo apt-get update -qq
W: --force-yes is deprecated, use one of the options starting with --allow instead.
E: Failed to fetch http://mirrors.lug.mtu.edu/ubuntu/dists/focal-updates/main/cnf/by-hash/SHA256/6df30ae031e349bad234da9e5fe4580f79dadb109c5a8fc583682a2808d92793  404  Not Found [IP: 128.171.104.147 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.


Exited with code exit status 100

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CONTAINER ID   NAME      CPU %     MEM USAGE / LIMIT   MEM %     NET I/O   BLOCK I/O   PIDS
Jul 13 22:52:38 "docker exec" requires at least 2 arguments.