This commit makes tarsum buffer allocation dynamic. This change
is required to avoid allocating memory excessively after the archive
buffering changes.
Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Upstream-commit: 7ef34407509fa76e3ead12a20c8b731f434e1971
Component: engine