RC-06: Find a software container that will help set up a specific runtime environment

Executive Summary: 
A community member needs to discover a container image that will help set up the runtime environment needed for their work.
User Importance Summary: 
Research computing often demands precisely constructed runtime environments, either to produce original results or to accurately reproduce & validate results.
Target Communities and Sizes: 
Researchers - 1,000 < N < 10,000 Educators who use community resources - 100 < N < 1,000 Science gateway developers - 10 < N < 100 Application developers - 100 < N < 1,000