The current implementation is only designed to support S3 buckets. Our initial attempt at supporting local file system support via /api/v1/file/list, GET/POST /api/v1/runs//samplesheet with the run_folder_uri was introducing issues where the local file system was exposed or conflicted w.r.t. path in run_folder_uri.
We will need to circle back on this and figure out how to properly support local file systems instead of s3 buckets.