NewDiskUsageCommand creates a new cobra.Command for `docker df`.

NewEventsCommand creates a new cobra.Command for `docker events`.

NewInfoCommand creates a new cobra.Command for `docker info`.

NewInspectCommand creates a new cobra.Command for `docker inspect`.

NewPruneCommand creates a new cobra.Command for `docker prune`.

NewSystemCommand returns a cobra command for `system` subcommands.

NewVersionCommand creates a new cobra.Command for `docker version`.