| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/docker/distribution/digest | |
| github.com/docker/docker/api/types | |
| github.com/docker/docker/pkg/plugingetter | |
| github.com/docker/docker/pkg/plugins | Package plugins provides structures and helper functions to manage Docker plugins. |
| github.com/opencontainers/runtime-spec/specs-go | |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |