| archive/tar | Package tar implements access to tar archives. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| github.com/containerd/continuity/fs | |
| github.com/docker/docker/pkg/archive | Package archive provides helper functions for dealing with archive files. |
| github.com/docker/docker/pkg/chrootarchive | |
| github.com/docker/docker/pkg/idtools | |
| github.com/moby/buildkit/cache | |
| github.com/moby/buildkit/session | |
| github.com/moby/buildkit/snapshot | |
| github.com/moby/buildkit/solver/llbsolver/ops/fileoptypes | |
| github.com/moby/buildkit/solver/pb | |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| github.com/tonistiigi/fsutil/copy | |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| log | Package log implements a simple logging package. |
| 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. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| time | Package time provides functionality for measuring and displaying time. |