Dockerized Lossless Audio Checker

Just packages up Lossless Audio Checker for use in Docker.

Usage, invoke the container with the target files to check mounted to /input.

If the enviornmental variable REDIS_HOST is set then the script will:

1. Generate an identifier hash of the file (SHA256 of <file_size>-<file_mod_epoch> <filename>).
2. Store the output element of LAC (ie: Clean).