| expvar | Package expvar provides a standardized interface to public variables, such as operation counters in servers. |
| github.com/docker/distribution | Package distribution will define the interfaces for the components of docker distribution. |
| github.com/docker/distribution/configuration | |
| github.com/docker/distribution/context | Package context provides several utilities for working with Go's context in http requests. |
| github.com/docker/distribution/digest | |
| github.com/docker/distribution/manifest | |
| github.com/docker/distribution/registry/client | |
| github.com/docker/distribution/registry/client/auth | |
| github.com/docker/distribution/registry/client/transport | |
| github.com/docker/distribution/registry/proxy/scheduler | |
| github.com/docker/distribution/registry/storage | Package storage contains storage services for use in the registry application. |
| github.com/docker/distribution/registry/storage/driver | |
| io | Package io provides basic interfaces to I/O primitives. |
| net/http | Package http provides HTTP client and server implementations. |
| net/url | Package url parses URLs and implements query escaping. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| sync/atomic | Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms. |
| time | Package time provides functionality for measuring and displaying time. |