From 2ac5581135eff474e8a0dcfb8a056ad19969595e Mon Sep 17 00:00:00 2001
From: David Gageot <david.gageot@docker.com>
Date: Wed, 18 Feb 2026 17:03:16 +0100
Subject: [PATCH] Fix ctrl-c in docker agent and fix `docker agent` defaultin
 to `docker agent run`

Signed-off-by: David Gageot <david.gageot@docker.com>
---
 cmd/root/root.go | 71 ++++++++++++++++++++++++++++--------------------
 1 file changed, 41 insertions(+), 30 deletions(-)

diff --git a/cmd/root/root.go b/cmd/root/root.go
index 7607e149a..cd594e490 100644
--- a/cmd/root/root.go
+++ b/cmd/root/root.go
@@ -32,7 +32,7 @@ type rootFlags struct {
 	logFile     io.Closer
 }
 
-func isCliPLugin() bool {
+func isDockerAgent() bool {
 	cliPluginBinary := "docker-agent"
 	if runtime.GOOS == "windows" {
 		cliPluginBinary += ".exe"
@@ -110,7 +110,7 @@ func NewRootCmd() *cobra.Command {
 	cmd.AddGroup(&cobra.Group{ID: "core", Title: "Core Commands:"})
 	cmd.AddGroup(&cobra.Group{ID: "advanced", Title: "Advanced Commands:"})
 
-	if isCliPLugin() {
+	if isDockerAgent() {
 		cmd.Use = "agent"
 		cmd.Short = "create or run AI agents"
 		cmd.Long = "create or run AI agents"
@@ -147,44 +147,55 @@ We collect anonymous usage data to help improve cagent. To disable:
 	}
 
 	rootCmd := NewRootCmd()
-
-	// When no subcommand is given, default to "run" (which runs the default agent).
-	// Users can use "cagent --help" to see available commands.
-	args = defaultToRun(rootCmd, args)
-
-	rootCmd.SetArgs(args)
 	rootCmd.SetIn(stdin)
 	rootCmd.SetOut(stdout)
 	rootCmd.SetErr(stderr)
+	setContextRecursive(ctx, rootCmd)
 
-	if isCliPLugin() {
-		plugin.Run(func(dockerCli command.Cli) *cobra.Command {
-			originalPreRun := rootCmd.PersistentPreRunE
-			rootCmd.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {
-				if err := plugin.PersistentPreRunE(cmd, args); err != nil {
-					return err
-				}
-				if originalPreRun != nil {
-					if err := originalPreRun(cmd, args); err != nil {
-						return processErr(ctx, err, stderr, rootCmd)
-					}
+	if plugin.RunningStandalone() {
+		// When no subcommand is given, default to "run".
+		rootCmd.SetArgs(defaultToRun(rootCmd, args))
+
+		if err := rootCmd.Execute(); err != nil {
+			return processErr(ctx, err, stderr, rootCmd)
+		}
+		return nil
+	}
+
+	// When no subcommand is given, default to "run".
+	rootCmd.SetArgs(append(args[0:1], defaultToRun(rootCmd, args[1:])...))
+	os.Args = append(os.Args[0:2], defaultToRun(rootCmd, os.Args[2:])...)
+
+	plugin.Run(func(dockerCli command.Cli) *cobra.Command {
+		originalPreRun := rootCmd.PersistentPreRunE
+		rootCmd.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {
+			if err := plugin.PersistentPreRunE(cmd, args); err != nil {
+				return err
+			}
+			if originalPreRun != nil {
+				if err := originalPreRun(cmd, args); err != nil {
+					return processErr(cmd.Context(), err, stderr, rootCmd)
 				}
-				return nil
 			}
-			rootCmd.SetContext(ctx)
-			return rootCmd
-		}, metadata.Metadata{
-			SchemaVersion: "0.1.0",
-			Vendor:        "Docker Inc.",
-			Version:       version.Version,
-		})
-	} else if err := rootCmd.ExecuteContext(ctx); err != nil {
-		return processErr(ctx, err, stderr, rootCmd)
-	}
+			return nil
+		}
+		return rootCmd
+	}, metadata.Metadata{
+		SchemaVersion: "0.1.0",
+		Vendor:        "Docker Inc.",
+		Version:       version.Version,
+	})
 
 	return nil
 }
 
+func setContextRecursive(ctx context.Context, cmd *cobra.Command) {
+	cmd.SetContext(ctx)
+	for _, child := range cmd.Commands() {
+		setContextRecursive(ctx, child)
+	}
+}
+
 // defaultToRun prepends "run" to the argument list when no subcommand is
 // specified so that bare "cagent" (or "cagent --debug", etc.) launches the
 // default agent. Help flags (--help / -h) are left alone.