Add fuse dependency to moby/buildkit image
Add fuse dependency to moby/buildkit image

Currently moby/buildkit image misses fuse dependency (fusermount) so currently
stargz support doesn't work on that image. This commit fixes this issue.

Signed-off-by: ktock <72a466a7d91579e23b8af87d6766ee221241ce87@gmail.com>

tonistiigi/buildkit_poc,tonistiigi/buildkit_poc