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docs: mention build cache in docker system prune description

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The synopsis only listed containers, networks, images, and volumes,
but the command always prunes unused build cache (including BuildKit
cache mounts). Align the description with the interactive warning.

Signed-off-by: Dean Chen <862469039@qq.com>
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Dean Chen
2026-08-10 09:45:49 +05:00
parent 4f84911bfe
commit 951f7653fc
1 changed files with 7 additions and 1 deletions
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docs/reference/commandline/system_prune.md
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@@ -18,7 +18,13 @@ Remove unused data
## Description
Remove all unused containers, networks, images (both dangling and unused),
and optionally, volumes.
unused [build cache](https://docs.docker.com/build/cache/), and optionally,
volumes.
Build cache is always eligible for pruning with this command (including BuildKit
cache mounts created with `RUN --mount=type=cache`). Use
[`docker builder prune`](builder_prune.md) if you only want to reclaim build
cache without removing containers, networks, or images.
## Examples