| archive/tar | Package tar implements access to tar archives. |
| bufio | Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O. |
| compress/gzip | Package gzip implements reading and writing of gzip format compressed files, as specified in RFC 1952. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/docker/docker/pkg/fileutils | |
| github.com/docker/docker/pkg/idtools | |
| github.com/docker/docker/pkg/longpath | Package longpath introduces some constants and helper functions for handling long paths in Windows. |
| github.com/docker/docker/pkg/pools | Package pools provides a collection of pools which provide various data types with buffers. |
| github.com/docker/docker/pkg/system | |
| io | Package io provides basic interfaces to I/O primitives. |
| 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. |