This document provides a brief history of containers starting in 1979 with Version 7 and continuing to developments in chroot, FreeBSD jails, Solaris Zones, and LXC in the early 2000s. It discusses the emergence of Docker in 2010 and 2011 and how containers can help enable continuous delivery by providing reusable runtime environments and infrastructure orchestration. The document promotes Pivotal Web Services and its focus on a minimum viable platform for container management and outlines its key components such as routing, backing services, health monitoring, and reusable runtime repositories.