RC-08: Access a repository of files from a compute resource administered by a service provider

Executive Summary: 
A researcher needs read-only access to a repository of files while using a compute resource administered by a service provider. The repository is hosted by a (most likely different) service provider. Repository contents may include: installed applications, container images, application configuration files, data files.
User Importance Summary: 
Some research communities maintain repositories of files containing software, container images, application configuration files, or data files for use on a wide variety of systems and resources. Community members need to access these repositories on any systems they use for their research.
Target Communities and Sizes: 
Researchers in communities that maintain file repositories - 100 < N < 1,000 Educators in communities that maintain file repositories - 10 < N < 100 Students in communities that maintain file repositories - 100 < N < 1,000 Science gateway developers in communities that maintain file repositories - 10 < N < 100