The document provides an overview of Docker for developers. It summarizes Docker Toolbox, the previous solution for using Docker on Mac or Windows, and introduces Docker for Mac. Docker for Mac uses a new virtualization technique called HyperKit that embeds a lightweight Alpine Linux distribution. It also discusses networking and storage solutions in Docker for Mac that aim to provide a native Mac experience while integrating with existing developer workflows. The document concludes with brief discussions of Docker Cloud for security scanning and automation capabilities.