From 15766209553523cb4ed1ce2f51389b043eb9abcb Mon Sep 17 00:00:00 2001
From: TastyHeadphones <tastyheadphones@icloud.com>
Date: Sat, 19 Sep 2026 01:28:31 +0000
Subject: [PATCH] inspect: list allowed object types in --type help

The flag help only said "of the given type" without naming any. Include
the same set we validate against so `docker inspect --help` is enough.
---
 cli/command/system/inspect.go      |  2 +-
 cli/command/system/inspect_test.go | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/cli/command/system/inspect.go b/cli/command/system/inspect.go
index 1912400068ce..4617b15156c1 100644
--- a/cli/command/system/inspect.go
+++ b/cli/command/system/inspect.go
@@ -77,7 +77,7 @@ func newInspectCommand(dockerCLI command.Cli) *cobra.Command {
 
 	flags := cmd.Flags()
 	flags.StringVarP(&opts.format, "format", "f", "", flagsHelper.InspectFormatHelp)
-	flags.StringVar(&opts.objectType, "type", "", "Only inspect objects of the given type")
+	flags.StringVar(&opts.objectType, "type", "", `Only inspect objects of the given type ("`+strings.Join(allTypes, `", "`)+`")`)
 	flags.BoolVarP(&opts.size, "size", "s", false, "Display total file sizes if the type is container")
 
 	_ = cmd.RegisterFlagCompletionFunc("type", completion.FromList(allTypes...))
diff --git a/cli/command/system/inspect_test.go b/cli/command/system/inspect_test.go
index 3fbadc7f6d0f..0d5dfa0f314d 100644
--- a/cli/command/system/inspect_test.go
+++ b/cli/command/system/inspect_test.go
@@ -46,3 +46,13 @@ func TestInspectValidateFlagsAndArgs(t *testing.T) {
 		})
 	}
 }
+
+func TestInspectTypeFlagHelpListsObjectTypes(t *testing.T) {
+	cmd := newInspectCommand(test.NewFakeCli(&fakeClient{}))
+	typeFlag := cmd.Flags().Lookup("type")
+	assert.Assert(t, typeFlag != nil)
+	usage := typeFlag.Usage
+	for _, objectType := range allTypes {
+		assert.Check(t, is.Contains(usage, objectType), "help should mention %q", objectType)
+	}
+}