Multi-directory image loader for RemoteCV which is an OpenCV worker for facial and feature recognition

This loader is intended to be compatible with the Thumbor Storage when using the MIXED_STORAGE_FILE_STORAGE = 'thumbor.storages.no_storage' option and loading files directly from disk.

Set the following enviroment variables before running RemoteCV:

## List of directories to load files from
## defaults to empty list
REMOTECV_MULTIDIR_LOADER_DIRS = []

See RemoteCV repo or use the Docker container maintaned by MinimalCompact as a base image... see /docker/Dockerfile for an example.