Docker’s mission is to build tools of mass innovation, starting with a programmable layer for the Internet that enables developers and IT operations teams to build and run distributed applications. As part of this mission, we have always endeavored to contribute software plumbing toolkits back to the community, following the UNIX philosophy of building small loosely coupled tools that are created to simply do one thing well. As Docker adoption has grown from 0 to 6 billion pulls, we have worked to address the needs of a growing and diverse set of distributed systems users. This work has led to the creation of many infrastructure plumbing components that have been contributed back to the community.
Read more at Docker blog