In recent years, using containers has been rapidly gaining traction as a solution to to lower the barriers to using more software on HPC and cloud resources. However, significant barriers still exist to actually doing this in practice, particularly for well-established community codes which expect to run on a particular operating system version or resource. Additional barriers exist for researchers unfamiliar with containerization technologies. While many beginner tutorials are available for building containers, they often stop short of covering the complexities that can arise when containerizing scientific computing software. The goal of this full-day tutorial is to demonstrate and work through building and running non-trivial containers with users. We will containerize community scientific software, exhibit how to share with a larger community via a container registry, and then run on a completely separate HPC resource,with and without the use of a Science Gateway. The subject matter will be approachable for intermediate to advanced users, and is expected to be of interest to a diverse audience including researchers,support staff, and teams building science gateways.
