This document discusses using Docker to containerize a development machine. It notes current problems with having varying operating systems, extensions, and dependencies across development environments that differ from production. Docker is presented as a solution to standardize environments by allowing developers to build, ship, and run applications in software containers. Benefits include not needing to manually install extensions, isolating environments per project, consistent development environments, and easy deployment. Laradock is introduced as a Docker setup that can replace Laravel Homestead for Laravel projects.