You've got flat files? That's understandable.
JSON files define file layouts, data types, and formats. Use these to teach Jiffy your own custom file formats without writing any code. Jiffy includes definitions for formats such as NACHA ACH files.
To use this image:
docker run -p 3000:3000 -d derekwlms/jiffy docker-machine ip (if using docker-machine - to get the Docker VM's IP address) Open your browser to http://(Docker VM IP):3000
For more details, see https://github.com/derekwlms/jiffy