| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/containerd/containerd/api/services/content/v1 | Code generated by protoc-gen-go-ttrpc. |
| github.com/containerd/containerd/content | |
| github.com/containerd/errdefs | Package errdefs defines the common errors used throughout containerd packages. |
| github.com/gogo/protobuf/types | Package types contains code for interacting with well-known types. |
| github.com/opencontainers/go-digest | Package digest provides a generalized type to opaquely represent message digests and their operations within the registry. |
| github.com/opencontainers/image-spec/specs-go/v1 | |
| io | Package io provides basic interfaces to I/O primitives. |