| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/containerd/containerd/defaults | Package defaults provides several common defaults for interacting with containerd. |
| github.com/pkg/errors | Package errors provides simple error handling primitives. |
| github.com/urfave/cli | Package cli provides a minimal framework for creating and organizing command line Go applications. |
| io | Package io provides basic interfaces to I/O primitives. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| net/http | Package http provides HTTP client and server implementations. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| time | Package time provides functionality for measuring and displaying time. |