Docker is sort of like a virtual machine, but not exactly. It lets you install applications more easily, and is extremely popular — but it’s hard for people to describe what it is, what it does, and why people are going ga-ga over it. In this talk, Andrew T. Baker introduces Docker to a Python audience. (So for example, he describes the Python-related Docker installations, and what extras they provide.) He explains how Docker simplifies application configuration and rollout, how it is different from (and similar to) other virtualization technologies, and where it’s going in the near future.