Docker¶

Docker is a platform that enables developers to build, deploy, and run applications in containers. This guide will walk you through the steps to install Docker.io on a Linux system.

Prerequisites¶

A Linux-based operating system (e.g., Ubuntu, Debian, CentOS)
A user account with sudo privileges

Steps to Install Docker.io¶

Update the package index:

Before installing Docker, update your package index to ensure you have the latest information about available packages.
```
sudo apt-get update
```

Install required packages:

Install the necessary packages to allow apt to use a repository over HTTPS.

sudo apt-get install \
     apt-transport-https \
     ca-certificates \
     curl \
     software-properties-common

Add Docker’s official GPG key:

Add Docker’s official GPG key to your system.

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

Set up the Docker repository:

Add the Docker repository to apt sources.

sudo add-apt-repository \
     "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
     $(lsb_release -cs) \
     stable"

Update the package index again:

After adding the Docker repository, update the package index again.
```
sudo apt-get update
```

Install Docker.io:

Install Docker from the Docker repository.

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Manage Docker as a non-root user:

To avoid typing sudo whenever you run the docker command, add your user to the docker group.
```
sudo groupadd -f docker && sudo usermod -aG docker $USER
```
Log out and log back in so that your group membership is re-evaluated.
Start the Docker service:

Start the Docker service if it is not already running.
```
sudo system start docker
```
Verify the Docker installation:

Verify that Docker is installed correctly by running the hello-world image.
```
sudo docker run hello-world
```
If Docker is installed correctly, you should see a message indicating that the installation was successful.

Enable NVIDIA GPU Support¶

To enable NVIDIA GPU support in Docker, follow these steps:

Install NVIDIA drivers:

Ensure that you have the appropriate NVIDIA drivers installed on your system. You can download the drivers from the NVIDIA website or install them using your package manager.
```
sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt-get install nvidia-driver-560
```

Install NVIDIA Container Toolkit:

Install the NVIDIA Container Toolkit to enable GPU support in Docker.

sudo curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add -
distribution=$(. /etc/os-release;echo $ID$VERSION_ID)
sudo 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

Configure Docker to use the NVIDIA runtime:

Configure Docker to use the NVIDIA runtime by default.

sudo tee /etc/docker/daemon.json <<EOF
{
     "default-runtime": "nvidia",
     "runtimes": {
          "nvidia": {
                "path": "nvidia-container-runtime",
                "runtimeArgs": []
          }
     }
}
EOF
sudo systemctl restart docker

Verify NVIDIA Docker installation:

Verify that the NVIDIA Docker installation is successful by running a test container.
```
sudo docker run --rm --gpus all nvidia/cuda:11.0-base nvidia-smi
```
If the installation is successful, you should see the output of nvidia-smi showing the details of your GPU.

With these steps, you have enabled NVIDIA GPU support in Docker.

Congratulations! You have successfully installed Docker.io on your Linux system. `