Maybe the author is referring to a really complicated build script that takes a few hours to run! But probably not. Though really, "overnight" is just a figure

Maybe the author is referring to a really complicated build script that takes a few hours to run! But probably not. Though really, "overnight" is just a figure of speech. Many startups probably are formed, ship a product, and die in the amount of time it takes to build a large fulfillment center.