| github.com/containerd/containerd/pkg/userns | Deprecated: use github.com/moby/sys/userns |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| golang.org/x/sys/unix | |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| 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. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |