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docker / Installing Docker
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Installing Docker

To start using Docker, you need to install it on your computer. Docker provides installers for Windows, macOS, and various Linux distributions. Follow the steps for your operating system.

Installing Docker on Windows

1. Download Docker Desktop for Windows from docker.com.
2. Run the installer and follow the setup wizard.
3. After installation, Docker Desktop starts automatically. You'll see a whale icon in the system tray.
4. Open a command prompt or PowerShell and verify:
docker --version

Installing Docker on macOS

1. Download Docker Desktop for Mac from docker.com.
2. Drag Docker to the Applications folder.
3. Launch Docker from Applications. You'll see the whale icon in the menu bar.
4. Open Terminal and run:
docker --version

Installing Docker on Linux (Ubuntu)

Open a terminal and run:
sudo apt update
sudo apt install docker.io
sudo systemctl start docker
sudo systemctl enable docker
To run Docker without sudo, add your user to the docker group:
sudo usermod -aG docker $USER
Log out and back in, then verify:
docker --version

Running a Test Container

After installation, run the classic hello-world container to confirm everything works:
docker run hello-world
If you see a welcome message, Docker is ready.


Two Minute Drill
  • Docker Desktop is available for Windows and macOS.
  • On Linux, use apt install docker.io (Ubuntu).
  • Verify installation with docker --version.
  • Run docker run hello-world to test.

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