Use spf13/cobra for docker images

This fix is part of the effort to convert commands to spf13/cobra #23211.

Thif fix coverted command `docker images` to use spf13/cobra

NOTE: As part of this fix, a new function `RequiresMaxArgs()`
has been defined in `cli/required.go`. This func returns an
error if there is not at most max args

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

cobraadaptor/adaptor.go

@@ -51,6 +51,7 @@ func NewCobraAdaptor(clientFlags *cliflags.ClientFlags) CobraAdaptor {
 		container.NewUnpauseCommand(dockerCli),
 		container.NewWaitCommand(dockerCli),
 		image.NewHistoryCommand(dockerCli),
+		image.NewImagesCommand(dockerCli),
 		image.NewRemoveCommand(dockerCli),
 		image.NewSearchCommand(dockerCli),
 		image.NewImportCommand(dockerCli),

required.go

@@ -43,6 +43,23 @@ func RequiresMinArgs(min int) cobra.PositionalArgs {
 	}
 }
 
+// RequiresMaxArgs returns an error if there is not at most max args
+func RequiresMaxArgs(max int) cobra.PositionalArgs {
+	return func(cmd *cobra.Command, args []string) error {
+		if len(args) <= max {
+			return nil
+		}
+		return fmt.Errorf(
+			"\"%s\" requires at most %d argument(s).\nSee '%s --help'.\n\nUsage:  %s\n\n%s",
+			cmd.CommandPath(),
+			max,
+			cmd.CommandPath(),
+			cmd.UseLine(),
+			cmd.Short,
+		)
+	}
+}
+
 // RequiresMinMaxArgs returns an error if there is not at least min args and at most max args
 func RequiresMinMaxArgs(min int, max int) cobra.PositionalArgs {
 	return func(cmd *cobra.Command, args []string) error {

usage.go

@@ -13,7 +13,6 @@ var DockerCommandUsage = []Command{
 	{"cp", "Copy files/folders between a container and the local filesystem"},
 	{"events", "Get real time events from the server"},
 	{"exec", "Run a command in a running container"},
-	{"images", "List images"},
 	{"info", "Display system-wide information"},
 	{"inspect", "Return low-level information on a container or image"},
 	{"load", "Load an image from a tar archive or STDIN"},