Have you heard the term container without fully understanding what it means? Then this session is for you! Containers are lightweight virtual machines that have become default packaging mechanisms for deploying systems. Docker is the pre-eminent container system. This session will provide some theory of containers and explanations of how containers work. Then in a supervised hands-on experience, participants will build, execute, deploy, and save a Docker container in a repository. Attendees should have preloaded Docker and executed "Hello World" before the session.