docs: system prune default keeps unused tagged images - #25820
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- Problem: the prune-everything section said the default removes all unused images. Live docker system prune only removes dangling images unless -a is passed. - Fix: say unused containers/networks plus dangling images by default, and that unused tagged images need -a/--all. - Verification: docker 29.1.3 — default warning lists "all dangling images"; docker system prune -a lists "all images without at least one container associated to them". Closed docker#17488 wanted to change the example to include -a and went stale; this only corrects the default-behavior sentence.
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dvdksn
approved these changes
Aug 13, 2026
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Summary
The "Prune everything" section said that by default
docker system pruneremoves all unused images. On Docker 29.1.3 the default confirmation only lists dangling images; unused tagged images stay unless you pass-a/--all.Corrected that sentence. Did not change the example command to include
-a(that was the stale approach in closed #17488).@netlify /engine/manage-resources/pruning/
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