Fix some unpack errors encountered when diffing gcr.io/gcp-runtimes/ubuntu (#159)
Fix some unpack errors encountered when diffing gcr.io/gcp-runtimes/ubuntu (#159)


nkubala/container-diff,nkubala/container-diff,nkubala/container-diff,GoogleContainerTools/container-diff,GoogleContainerTools/container-diff,GoogleContainerTools/container-diff