Docker vs bare-metal on small VPS

Docker vs bare-metal on small VPS
Docker is great for reproducibility, but on a 1GB box every container brings its own libc copy, an extra network layer, and 100-300MB of overhead before your app even loads.
— Run 1-2 sites, want max RAM for PHP/DB: bare LEMP, no Docker
— Juggling conflicting PHP/node versions, ship to other boxes: Docker
I keep prod LEMP bare-metal and use Docker only for one-off tools. RAM is the budget, spend it on the app. Try it tonight.