I got tired of Googling Docker commands, so I...

Let me paint you a picture. It's late. You're writing a Dockerfile. You're in the zone — the kind of focus where you're actually moving fast and everything is clicking. You type HEALTHCHECK and your fingers pause. Is it --interval or --period? And what's the timeout default again? Is there a --start-period flag or did you make that up? You open a new tab. You type "dockerfile healthcheck options" into Google. The first result is a Stack Overflow answer from 2017. The accepted answer is wrong. Th