This project serves as boilerplate for a lua cli application. Your code goes in src/ and app.lua is the entry point of the application. It will be handed a table with the values being the command-line arguments, this variable will be named arg.
When you run make a binary will be placed in bin/ named app, although you can change the name in the Makefile if you want. The created binary contains all of your lua code so you don't have to worry about packing your lua code with a binary.
By default this project uses luac but you can use luajit if you prefer.