buildx/docs/reference/buildx_prune.md

buildx prune

Usage:  docker buildx prune

Remove build cache

Options:
  -a, --all                  Remove all unused images, not just dangling ones
      --builder string       Override the configured builder instance
      --filter filter        Provide filter values (e.g. 'until=24h')
  -f, --force                Do not prompt for confirmation
      --keep-storage bytes   Amount of disk space to keep for cache
      --verbose              Provide a more verbose output

Description

Remove build cache