By default build_deb.sh destroys all previous build image to make sure we don't have environment dependent issue, but it's takes time to build distribution root image (.tgz in pbuilder) from scratch. --no-clean option is for skipping create .tgz stage, use previously built image, to make build time shorter. Signed-off-by: Takuya ASADA <syuu@scylladb.com> Message-Id: <1500542094-12946-1-git-send-email-syuu@scylladb.com>