lets say you have an ai in a docker container or just want to use the gpu power inside a docker container. this is for you.

NVIDIA Container Toolkit Installation Steps

curl -fsSL https://nvidia.github.io/libnvidia-container/gpgkey | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg \
  && curl -s -L https://nvidia.github.io/libnvidia-container/stable/deb/nvidia-container-toolkit.list | \
    sed 's#deb https://#deb [signed-by=/usr/share/keyrings/nvidia-container-toolkit-keyring.gpg] https://#g' | \
    sudo tee /etc/apt/sources.list.d/nvidia-container-toolkit.list
sudo apt-get update
sudo apt-get install -y nvidia-container-toolkit

configuration

sudo nvidia-ctk runtime configure --runtime=docker
sudo systemctl restart docker
##Test
docker run --gpus all nvidia/cuda:11.5.2-base-ubuntu20.04 nvidia-smi

How to activate gpu compatability for docker on ubuntu