Docker is a platform that enables developers to automate the deployment of applications inside lightweight, portable containers. This guide will walk you through the steps to install Docker on Debian 11.

Step 1: Update Your System

Start by ensuring your system is up to date:

sudo apt update && sudo apt upgrade -y

Step 2: Install Required Packages

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

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

Step 3: Add Docker's Official GPG Key

Add Docker’s official GPG key to your system:

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

Step 4: Add the Docker Repository

Add the Docker repository to APT sources:

echo "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list

Step 5: Install Docker

Update your package database and install Docker:

sudo apt update
sudo apt install docker-ce -y

Step 6: Start and Enable Docker

Start the Docker service and enable it to run at boot:

sudo systemctl start docker
sudo systemctl enable docker

Step 7: Verify Docker Installation

Check if Docker is installed correctly by running the following command:

sudo docker run hello-world

Conclusion

You have successfully installed Docker on Debian 11. You can now start using Docker to manage your applications within containers.

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