* Bump github.com/docker/docker to latest release
* Pin deps to docker/docker's requirements
fix build breakages
fix unit test
Trying to see whether am-i-in-a-container checks are broken for integration tests...
* 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.
Jason Hall
Priya Wadhwa
dlorenc