3. Setup NVIDIA Container Toolkit:
Add the NVIDIA GPG key:

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curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add -
Add the NVIDIA Docker repository:

For distributions based on Ubuntu 18.04 and later:

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distribution=$(. /etc/os-release;echo $ID$VERSION_ID)
curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list
Install the NVIDIA Docker toolkit:

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sudo apt-get update
sudo apt-get install -y nvidia-docker2
Restart Docker:

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sudo systemctl restart docker