Freeing up space · Caches and clutter
Docker is taking up a huge amount of space — what can Storage Studio do?
Short answer: Free Up Space can clear Docker's layer cache and Podman's build cache, and What's Using Space shows Docker's data size. For unused images and containers, Docker's own clean-up commands are the precise tool.
Two things. Free Up Space's cache step can clear Docker's layer cache and Podman's build cache, which the tools rebuild when needed. And What's Using Space checks for Docker's data, so you can see how much it holds and, where the row is marked actionable, move it to your fast drive.
For images and containers you no longer need, Docker's own clean-up commands are the most precise tool, because only Docker knows which images are still in use.