Update cli/command/container/opts.go

Add API annotation to `cgroupns` flag

Co-Authored-By: Sebastiaan van Stijn <thaJeztah@users.noreply.github.com>

Author: rgulewich

cli/command/container/opts.go

@@ -200,6 +200,7 @@ func addFlags(flags *pflag.FlagSet) *containerOptions {
 	flags.Var(&copts.securityOpt, "security-opt", "Security Options")
 	flags.StringVar(&copts.usernsMode, "userns", "", "User namespace to use")
 	flags.StringVar(&copts.cgroupnsMode, "cgroupns", "", "Cgroup namespace to use")
+	flags.SetAnnotation("cgroupns", "version", []string{"1.41"})
 
 	// Network and port publishing flag
 	flags.Var(&copts.extraHosts, "add-host", "Add a custom host-to-IP mapping (host:ip)")