Figure out how to enable local filesystem IO with the ULR. The ULR currently can't do local filesystem IO due to using portability with a dockerized SDK. Having the SDK harness in Docker means that local files are unable to be accessed, even if the pipeline is running locally. This bug is to figure out a way to enable local files to be used in the ULR.
(Meta note: This bug is only for the ULR, I'll probably create another bug for this as a general portability feature later)