Imports of package helpers

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/Microsoft/hcsshim/ext4/tar2ext4
github.com/Microsoft/hcsshim/pkg/securitypolicy
github.com/google/go-containerregistry/pkg/authnPackage authn defines different methods of authentication for talking to a container registry.
github.com/google/go-containerregistry/pkg/namePackage name defines structured types for representing image references.
github.com/google/go-containerregistry/pkg/v1Package v1 defines structured types for OCI v1 images
github.com/google/go-containerregistry/pkg/v1/remotePackage remote provides facilities for reading/writing v1.Images from/to a remote image registry.