Docker

A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries and settings.

This part describes some Docker containers used to perform build tasks. It is the documentation for the container build and invocation procedure.

Further reading about docker here.