Instead of using the "flags" standard library package, I've migrated to Cobra.
Allows easier self-discovery of command line flags and what they do.
Makes a clear distinction between CLI mode and server mode and the flags that belong to each.
I've also removed the "app_old" directory now that it's been a while since the new version was in place.
Updated readme to reflect changes and provide docker instructions.
Instead of using the "flags" standard library package, I've migrated to Cobra.
I've also removed the "app_old" directory now that it's been a while since the new version was in place. Updated readme to reflect changes and provide docker instructions.