Imports of noauth command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
github.com/google/go-containerregistry/pkg/authn/k8schainPackage k8schain exposes an implementation of the authn.Keychain interface based on the semantics the Kubelet follows when pulling the images for a Pod in Kubernetes.
github.com/google/go-containerregistry/pkg/namePackage name defines structured types for representing image references.
github.com/google/go-containerregistry/pkg/v1/remotePackage remote provides facilities for reading/writing v1.Images from/to a remote image registry.
logPackage log implements a simple logging package.