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How to Install Docker on macOS using Homebrew

This post provides a step-by-step guide with a list of commands on how to install Docker on macOS using Homebrew. Docker is a computer program that performs operating-system-level virtualization, also known as “containerization”.

What is Docker?

“Containers are isolated from each other and bundle their own tools, libraries and configuration files; they can communicate with each other through well-defined channels. All containers are run by a single operating system kernel and are thus more lightweight than virtual machines. Containers are created from “images” that specify their precise contents. Images are often created by combining and modifying standard images downloaded from repositories.” ~ AWS CLI

What is Homebrew?

Homebrew is a free and open-source software package management system that simplifies the installation of software on Apple’s macOS operating system. It is known as the missing package manager for macOS.

Quick Commands

The following is the single command required to install Docker on macOS using Homebrew.

$ brew cask install docker

Brew Commands

This section provides a quick set of commands on how to install Docker on macOS using Homebrew. It is assumed that Homebrew is already installed. If not, please follow this link.

$ brew update                           # Fetch latest version of homebrew and formula.
$ brew tap caskroom/cask                # Tap the Caskroom/Cask repository from Github using HTTPS.
$ brew search docker                    # Searches all known Casks for a partial or exact match.
$ brew cask info docker                 # Displays information about the given Cask
$ brew cask install docker              # Install the given cask.
$ brew cleanup                          # Remove any older versions from the cellar.


Congratulations! You have successfully installed Docker on macOS making use of Homebrew. Follow me on any of the different social media platforms and feel free to leave comments.