Fix docker ps truncate long image name by default

Signed-off-by: Lei Jitang <leijitang@huawei.com>

api/client/ps/custom.go

@@ -62,7 +62,9 @@ func (c *containerContext) Image() string {
 		return "<no image>"
 	}
 	if c.trunc {
-		return stringutils.Truncate(c.c.Image, 12)
+		if stringid.TruncateID(c.c.ImageID) == stringid.TruncateID(c.c.Image) {
+			return stringutils.Truncate(c.c.Image, 12)
+		}
 	}
 	return c.c.Image
 }

api/client/ps/custom_test.go

@@ -26,8 +26,26 @@ func TestContainerPsContext(t *testing.T) {
 		{types.Container{ID: containerID}, false, containerID, idHeader, ctx.ID},
 		{types.Container{Names: []string{"/foobar_baz"}}, true, "foobar_baz", namesHeader, ctx.Names},
 		{types.Container{Image: "ubuntu"}, true, "ubuntu", imageHeader, ctx.Image},
-		{types.Container{Image: "verylongimagename"}, true, "verylongimag", imageHeader, ctx.Image},
+		{types.Container{Image: "verylongimagename"}, true, "verylongimagename", imageHeader, ctx.Image},
 		{types.Container{Image: "verylongimagename"}, false, "verylongimagename", imageHeader, ctx.Image},
+		{types.Container{
+			Image:   "a5a665ff33eced1e0803148700880edab4",
+			ImageID: "a5a665ff33eced1e0803148700880edab4269067ed77e27737a708d0d293fbf5",
+		},
+			true,
+			"a5a665ff33ec",
+			imageHeader,
+			ctx.Image,
+		},
+		{types.Container{
+			Image:   "a5a665ff33eced1e0803148700880edab4",
+			ImageID: "a5a665ff33eced1e0803148700880edab4269067ed77e27737a708d0d293fbf5",
+		},
+			false,
+			"a5a665ff33eced1e0803148700880edab4",
+			imageHeader,
+			ctx.Image,
+		},
 		{types.Container{Image: ""}, true, "<no image>", imageHeader, ctx.Image},
 		{types.Container{Command: "sh -c 'ls -la'"}, true, `"sh -c 'ls -la'"`, commandHeader, ctx.Command},
 		{types.Container{Created: unix}, true, time.Unix(unix, 0).String(), createdAtHeader, ctx.CreatedAt},

api/types/types.go

@@ -127,6 +127,7 @@ type Container struct {
 	ID         string `json:"Id"`
 	Names      []string
 	Image      string
+	ImageID    string
 	Command    string
 	Created    int64
 	Ports      []Port