| expvar | Package expvar provides a standardized interface to public variables, such as operation counters in servers. |
| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/Sirupsen/logrus | |
| github.com/bugsnag/bugsnag-go | Package bugsnag captures errors in real-time and reports them to BugSnag (http://bugsnag.com). |
| 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/registry/auth/silly | Package silly provides a simple authentication scheme that checks for the existence of an Authorization header and issues access if is present and non-empty. |
| github.com/docker/distribution/registry/auth/token | |
| github.com/docker/distribution/registry/handlers | |
| github.com/docker/distribution/registry/storage/driver/filesystem | |
| github.com/docker/distribution/registry/storage/driver/inmemory | |
| github.com/docker/distribution/registry/storage/driver/s3 | |
| github.com/docker/distribution/version | |
| github.com/gorilla/handlers | Package handlers is a collection of handlers (aka "HTTP middleware") for use with Go's net/http package (or any framework supporting http.Handler). |
| github.com/yvasiyarov/gorelic | Package gorelic is an New Relic agent implementation for Go runtime. |
| golang.org/x/net/context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| net/http | Package http provides HTTP client and server implementations. |
| net/http/pprof | Package pprof serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool. |
| os | Package os provides a platform-independent interface to operating system functionality. |