Install Docker🌱 Beginner
To start containerizing applications, you need to install the Docker Engine on your local machine. The standard way for developers to do this is by installing Docker Desktop.
What is Docker Desktop?
Docker Desktop is a complete, easy-to-install application for Mac, Windows, and Linux. It bundles the Docker Engine, the Docker CLI (command line), Docker Compose, and a highly visual GUI dashboard to manage your containers and images.
Why Do We Need It?
At its core, Docker relies on Linux kernel features (like namespaces and cgroups) to isolate containers. Because macOS and Windows do not have a Linux kernel natively, Docker Desktop automatically manages a hidden, lightweight Linux Virtual Machine in the background so containers can run seamlessly.
How to Install and Verify
- Download: Navigate to
docker.com/products/docker-desktopand download the installer for your OS. - Install: Follow the standard installation wizard. On Windows, ensure you enable the WSL 2 (Windows Subsystem for Linux) backend when prompted for maximum performance.
- Start: Launch the Docker Desktop application. Wait for the Docker icon in your system tray to turn green (indicating the engine is running).
Once it is running, open your terminal and verify the installation:
# Check the installed version
docker --version
# Run the official test container to verify everything is working
docker run hello-world