Merge pull request #3971 from thaJeztah/sync_cobra_streams

cli: pass dockerCLI's in/out/err to cobra cmds

cli-plugins/plugin/plugin.go

@@ -133,7 +133,9 @@ func newPluginCommand(dockerCli *command.DockerCli, plugin *cobra.Command, meta
 	}
 	opts, flags := cli.SetupPluginRootCommand(cmd)
 
+	cmd.SetIn(dockerCli.In())
 	cmd.SetOut(dockerCli.Out())
+	cmd.SetErr(dockerCli.Err())
 
 	cmd.AddCommand(
 		plugin,

cmd/docker/docker.go

@@ -51,6 +51,10 @@ func newDockerCommand(dockerCli *command.DockerCli) *cli.TopLevelCommand {
 			DisableDescriptions: true,
 		},
 	}
+	cmd.SetIn(dockerCli.In())
+	cmd.SetOut(dockerCli.Out())
+	cmd.SetErr(dockerCli.Err())
+
 	opts, flags, helpCmd = cli.SetupRootCommand(cmd)
 	registerCompletionFuncForGlobalFlags(dockerCli, cmd)
 	flags.BoolP("version", "v", false, "Print version information and quit")