Imports of package registry

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/remotes/docker
github.com/containerd/containerd/snapshots
github.com/docker/distribution/referencePackage reference is deprecated, and has moved to github.com/distribution/reference.
github.com/moby/buildkit/cache/remotecache
github.com/moby/buildkit/session
github.com/moby/buildkit/util/compression
github.com/moby/buildkit/util/contentutil
github.com/moby/buildkit/util/estargz
github.com/moby/buildkit/util/push
github.com/moby/buildkit/util/resolver
github.com/moby/buildkit/util/resolver/limited
github.com/opencontainers/go-digestPackage digest provides a generalized type to opaquely represent message digests and their operations within the registry.
github.com/opencontainers/image-spec/specs-go/v1
github.com/pkg/errorsPackage errors provides simple error handling primitives.
strconvPackage strconv implements conversions to and from string representations of basic data types.