| 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/docker/pkg/stringutils | |
| github.com/docker/docker/pkg/ulimit | |
| github.com/docker/libcontainer | Libcontainer provides a native Go implementation for creating containers with namespaces, cgroups, capabilities, and filesystem access controls. |
| github.com/docker/libcontainer/configs | |
| github.com/syndtr/gocapability/capability | Package capability provides utilities for manipulating POSIX capabilities. |
| io | Package io provides basic interfaces to I/O primitives. |
| os/exec | Package exec runs external commands. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| time | Package time provides functionality for measuring and displaying time. |