nvidia_docker_setup2.txt

 sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88
sudo add-apt-repository    "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
sudo apt update
#sudo apt install docker-ce -y

sudo apt install docker-ce=18.03.0~ce-0~ubuntu -y --allow-downgrades

# Install nvidia-docker2
curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey |   sudo apt-key add -
curl -s -L https://nvidia.github.io/nvidia-docker/ubuntu16.04/nvidia-docker.list |   sudo tee /etc/apt/sources.list.d/nvidia-docker.list

sudo apt-get update
sudo apt install nvidia-docker2 -y
sudo tee /etc/docker/daemon.json <<EOF
{
    "runtimes": {
	"nvidia": {
	    "path": "/usr/bin/nvidia-container-runtime",
	    "runtimeArgs": []
	}
    }
}
EOF
sudo pkill -SIGHUP dockerd
sudo apt install bridge-utils
su
service docker stop
sleep 1;
iptables -t nat -F
sleep 1;
ifconfig docker0 down
sleep 1;
brctl delbr docker0
sleep 1;
service docker start
exit;

ls -ld .docker
if required change permissions so the current account owns the directory
sudo chown -R $USER.$USER .docker

ls -ld .docker/
ls -l .docker/
exit
wget https://ngc.nvidia.com/downloads/ngccli_reg_linux.zip && unzip ngccli_reg_linux.zip && chmod u+x ngc

for what follows the user must be a member of the docker group
sudo usermod -a -G docker $USER
if one then executes
groups
docker will NOT appear
the user must log out and log in again for the change to take hold

now some text...one needs to have created an API key on the nvidia ncg page (https://ngc.nvidia.com/setup)and 
copied it to a file for future use. This needs to include a linefeed after the key..ie the file has 2 lines
then
docker login nvcr.io
that will ask for Username the user name must be $oauthtoken
Username ($oauthtoken):
Password:  paste-you-API-key-here   (be sure the paste includes a linefeed at the end or it just hangs)
You need to paste your API Key in as the password from the file (with the linefeed). Then you should see,
Login Succeeded