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The local cache example used a Move cache step to work around the cache directory growing on every run, citing moby/buildkit#1896. That issue is closed: moby/buildkit#6612 added a reset attribute to the local cache exporter, and Buildx v0.35.0 is the first release to carry it. Export to the cache directory directly with reset=true instead. Measured over five runs exporting to the same directory: without reset the store grew from 5 to 21 blobs, with reset it stayed at 5, and importing from it on a fresh builder still hit the cache. The callout is now a note rather than a warning, since the growth has a supported fix. Signed-off-by: Sunmin Lee <134378502+sunm2n@users.noreply.github.com>