Foundation

This section covers the basic ideas and commands you need before building anything yourself. No Dockerfile writing yet — that starts in the next section.

What You Will Learn

By the end of this section, you will be able to:

Explain what Docker is and why it solves the “it works on my machine” problem
Install Docker on your machine
Explain the difference between an image, a container, and a registry
Run, inspect, stop, and remove a container
Use the Docker commands you will reach for every day

Pages in This Section

What is Docker

The problem Docker solves, and how a container compares to a virtual machine.

Installation

Install Docker Desktop and confirm it works.

Core Concepts

Image, container, and registry — the three ideas everything else builds on.

Your First Container

Run, view, stop, and remove a container using an existing image.

Essential Commands

The commands you will use every day, grouped by what they do.

Read one page, then open a terminal and do it yourself. Docker is a hands-on skill.

Next → What is Docker