Imports of package limited

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/containerd/containerd/content
github.com/containerd/containerd/images
github.com/containerd/containerd/remotes
github.com/docker/distribution/referencePackage reference is deprecated, and has moved to github.com/distribution/reference.
github.com/opencontainers/image-spec/specs-go/v1
github.com/sirupsen/logrusPackage logrus is a structured logger for Go, completely API compatible with the standard library logger.
golang.org/x/sync/semaphorePackage semaphore provides a weighted semaphore implementation.
ioPackage io provides basic interfaces to I/O primitives.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.