Basics

From concepts to environment — build a solid mental model of Docker and get it installed.

📄️What is Docker

Docker is the most popular containerization platform. It packages an application and all its dependencies (code, runtime, system tools, libraries) into a single lightweight, portable unit, enabling "build once, run anywhere".

📄️Core Concepts

Master four core objects and you have Docker's skeleton: image, container, volume, network.

📄️Install Docker

This guide shows how to install Docker Engine (Community Edition) on Debian and Ubuntu.