| github.com/docker/distribution/registry/api/v2 | Package v2 describes routes, urls and the error codes used in the Docker Registry JSON HTTP API V2. |
| log | Package log implements a simple logging package. |
| net/http | Package http provides HTTP client and server implementations. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| regexp | Package regexp implements regular expression search. |
| text/template | Package template implements data-driven templates for generating textual output. |