| archive/tar | Package tar implements access to tar archives. |
| crypto/sha256 | Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4. |
| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| github.com/boltdb/bolt | Package bolt implements a low-level key/value store in pure Go. |
| github.com/docker/docker/builder | Package builder defines interfaces for any Docker builder to implement. |
| github.com/docker/docker/builder/remotecontext | |
| github.com/docker/docker/pkg/archive | Package archive provides helper functions for dealing with archive files. |
| github.com/docker/docker/pkg/directory | |
| github.com/docker/docker/pkg/stringid | Package stringid provides helper functions for dealing with string identifiers |
| github.com/docker/docker/pkg/tarsum | Package tarsum provides algorithms to perform checksum calculation on filesystem layers. |
| github.com/moby/buildkit/session/filesync | |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| github.com/sirupsen/logrus | Package logrus is a structured logger for Go, completely API compatible with the standard library logger. |
| github.com/tonistiigi/fsutil | |
| 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. |
| golang.org/x/sync/singleflight | Package singleflight provides a duplicate function call suppression mechanism. |
| hash | Package hash provides interfaces for hash functions. |
| 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. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |