| 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/distribution/reference | Package reference provides a general type to represent any way of referencing images within the registry. |
| github.com/docker/distribution | Package distribution will define the interfaces for the components of docker distribution. |
| github.com/docker/distribution/manifest/manifestlist | |
| github.com/docker/distribution/manifest/schema1 | |
| github.com/docker/distribution/manifest/schema2 | |
| github.com/docker/docker/api/server/httputils | |
| github.com/docker/docker/api/server/router | |
| github.com/docker/docker/api/types/registry | |
| github.com/docker/docker/distribution | |
| github.com/docker/docker/errdefs | Package errdefs defines a set of error interfaces that packages should use for communicating classes of errors. |
| github.com/opencontainers/image-spec/specs-go/v1 | |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| net/http | Package http provides HTTP client and server implementations. |
| os | Package os provides a platform-independent interface to operating system functionality. |