| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| github.com/containerd/log | Package log provides types and functions related to logging, passing loggers through a context, and attaching context to the logger. |
| github.com/docker/docker/api/types/versions | |
| github.com/docker/docker/image | |
| github.com/docker/docker/layer | Package layer is package for managing read-only and read-write mounts on the union file system driver. |
| github.com/docker/docker/pkg/stringid | Package stringid provides helper functions for dealing with string identifiers |
| github.com/opencontainers/go-digest | Package digest provides a generalized type to opaquely represent message digests and their operations within the registry. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |