How to install nvidia docker on Ubuntu

curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add - 
distribution=$(. /etc/os-release;echo $ID$VERSION_ID) && echo $distribution
curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list
sudo apt-get update
sudo apt-get install -y nvidia-docker2
sudo systemctl restart docker
sudo systemctl status docker

Validate

docker run --runtime=nvidia --rm nvidia/cuda:10.2-base nvidia-smi