How much RAM should I get for a MacBook Air if I'm running Docker?

Regarding the MacBook Air: Get 16GB. 8GB will work, but you’ll hate life because Docker eats memory — a couple of containers plus your editor and browser hit 8GB fast, causing swapping that slows everything and wears the SSD. The 16GB Air isn’t much more expensive, and future you deserves not to watch the beachball spin.