* Vendor changes for go-containerregistry switch.
* Manual changes for go-containerregistry switch.
The biggest change is refactoring the tarball unpacking.
* Pull more of container-diff out.
* More vendor removals.
* More unit tests.
* adding VOLUME command
* proper test project
* general fixes
* fixing project name
* fixing volume unit test
* fixing integration test
* adding tests
* adding util test
* fixing test
* actually create the volume mounted directory
* fix test
Priya Wadhwa
dlorenc
Matt Rickard
Sharif Elgamal