What's the proper way to package dough?
I would wrap in freezer-safe cling wrap and then put that into freezer-safe ziplock bags. Use sharpie on the outer bags before bagging to write the date and what's in it (or put a sticker on it if this is more of a professional operation or if it's something the public will be buying directly). If this is something you'll be doing a lot you should get a vacuum sealer for the outer bag.