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    You are at:Home»General Articles»How To Install Docker on Ubuntu 22.04

    How To Install Docker on Ubuntu 22.04

    By RahulSeptember 20, 20233 Mins Read

    Docker has revolutionized the way developers create, deploy, and manage applications by enabling lightweight containerization technology, which allows for easy management and isolation of applications and their dependencies. In this tutorial, we will guide you through the process of installing Docker on Ubuntu 22.04, the latest long-term support (LTS) release of this popular Linux distribution. We will begin by discussing the benefits of using Docker and why it is essential for modern development workflows. Next, we will cover the necessary system requirements and prerequisites for a successful installation.

    Prerequisites

    Before we begin, ensure that you have:

    • A system running Ubuntu 22.04.
    • A user account with sudo privileges.

    Step 1: Update your system

    Before installing any new software, it’s always a good idea to update your system packages. Open the terminal and run the following commands:

    sudo apt update 
    sudo apt upgrade 
    

    Step 2: Install required dependencies

    To install Docker on Ubuntu, we need to install some necessary dependencies first. Run the following command to install them:

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

    Step 3: Add Docker repository

    Next, we will add the official Docker repository to our system. First, add the GPG key for the Docker repository:

    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg 
    

    Then, add the Docker repository to your system with the following command:

    echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null 
    

    Step 4: Install Docker

    Now that we have added the Docker repository, update your package index:

    sudo apt update 
    

    Then, install Docker with the following command:

    sudo apt install docker-ce docker-ce-cli containerd.io 
    

    Step 5: Verify Docker installation

    To verify that Docker has been installed successfully, run the following command:

    sudo docker --version 
    

    You should see output similar to this, indicating the installed Docker version:

    
    Docker version 24.0.6, build ed223bc
    
    

    Step 6: Manage Docker service

    Docker should now be installed and running as a background service. To check the status of the Docker service, run:

    sudo systemctl status docker 
    

    If the Docker service is not running, you can start it with:

    sudo systemctl start docker 
    

    To enable the Docker service to start automatically at boot, run:

    sudo systemctl enable docker 
    

    Step 7: Running Docker without sudo (optional)

    By default, Docker requires sudo privileges to run. If you want to use Docker without typing ‘sudo’ every time, add your user to the ‘docker’ group with the following command:

    sudo usermod -aG docker $USER 
    

    After running this command, log out and log back in for the changes to take effect.

    Conclusion

    Congratulations! You have successfully installed Docker on your Ubuntu 22.04 system. You can now start using Docker to create, deploy, and manage your containerized applications. For more information on using Docker and its features, visit the official Docker documentation: https://docs.docker.com/.

    Docker Dockerfile
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