Wocker provides a Docker-based rapid development environment for WordPress. It allows users to create new WordPress environments in just 3 seconds using Docker containers. Wocker containers run as isolated processes on the host operating system alongside other containers, sharing just the application and dependencies rather than an entire guest OS, making development more efficient compared to traditional virtual machines. Users can get started with Wocker by installing Vagrant, VirtualBox, cloning the Wocker GitHub repository, and running vagrant up to launch the environment.