ITHREKHI INSIGHTS

How to install Docker

Docker is a platform that enables developers to build, deploy, and manage applications in isolated environments called **containers**. Containers package all the code, dependencies, and configurations needed to run an application, making it easy to move software across different environments without compatibility issues. Learn more about how to install Docker here

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How to Install Docker on Windows, Linux, and macOS

Below are step-by-step instructions for installing Docker on each OS, along with links to official documentation for further help.

1. Docker Installation on Windows

  1. Download Docker Desktop:

  2. Run the Installer:

    • Run the downloaded .exe file and follow the on-screen instructions.
    • During installation, select whether to use WSL 2 or Hyper-V as the backend (WSL 2 is recommended if you’re on Windows 10 version 1903 or higher).

  3. Complete the Installation:

    • After installation, open Docker Desktop and go through the setup wizard to finalize settings.
    • Docker will automatically configure to start on boot. You may also enable Kubernetes if you need it.

  4. Verify the Installation:

    • Open a terminal (PowerShell or Command Prompt) and run the command: 
      docker --version
    • You should see the Docker version number if the installation was successful.

  5. Additional Information:

2. Docker Installation on Linux

Docker is available on most Linux distributions. Here's a general guide, with specifics for Ubuntu as an example.

  1. Update Package Index:

    • Open your terminal and update the package list. 
      sudo apt-get update

  2. Install Required Packages:

    • Install necessary prerequisites to allow apt to use repositories over HTTPS: 
      sudo apt-get install \
  ca-certificates \
  curl \
  gnupg \
  lsb-release

  3. Add Docker’s Official GPG Key:

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

  4. Set Up the Repository:

    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

  5. Install Docker Engine:

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

  6. Start Docker:

    • Start the Docker service: 
      sudo systemctl start docker
    • Enable Docker to start on boot: 
      sudo systemctl enable docker

  7. Verify the Installation:

    docker --version

  8. Further Information:

3. Docker Installation on macOS

  1. Download Docker Desktop for macOS:

  2. Install Docker Desktop:

    • Open the .dmg file and drag the Docker icon to the Applications folder.
    • Open Docker from Applications, which will start the installation process.

  3. Follow the Setup Wizard:

    • Go through any initial configuration setup, and Docker Desktop should start automatically after the installation.

  4. Verify the Installation:

    • Open a terminal and run: 
      docker --version
    • If the version number displays, your installation was successful.

  5. Additional Information:

With Docker installed, you can start building, sharing, and running containerized applications across any environment! Let us know if you have questions or need additional help.