container start: fix regression when using name

pkg/adapter/containers.go

@@ -656,20 +656,25 @@ func (r *LocalRuntime) Start(ctx context.Context, c *cliconfig.StartValues, sigP
 
 			return exitCode, nil
 		}
-		if ctrRunning {
-			fmt.Println(ctr.ID())
-			continue
-		}
-		// Handle non-attach start
-		// If the container is in a pod, also set to recursively start dependencies
-		if err := ctr.Start(ctx, ctr.PodID() != ""); err != nil {
-			if lastError != nil {
-				fmt.Fprintln(os.Stderr, lastError)
+		// Start the container if it's not running already.
+		if !ctrRunning {
+			// Handle non-attach start
+			// If the container is in a pod, also set to recursively start dependencies
+			if err := ctr.Start(ctx, ctr.PodID() != ""); err != nil {
+				if lastError != nil {
+					fmt.Fprintln(os.Stderr, lastError)
+				}
+				lastError = errors.Wrapf(err, "unable to start container %q", container)
+				continue
 			}
-			lastError = errors.Wrapf(err, "unable to start container %q", container)
-			continue
 		}
-		fmt.Println(ctr.ID())
+		// Check if the container is referenced by ID or by name and print
+		// it accordingly.
+		if strings.HasPrefix(ctr.ID(), container) {
+			fmt.Println(ctr.ID())
+		} else {
+			fmt.Println(container)
+		}
 	}
 	return exitCode, lastError
 }

test/e2e/start_test.go

@@ -57,15 +57,32 @@ var _ = Describe("Podman start", func() {
 		session = podmanTest.Podman([]string{"container", "start", cid})
 		session.WaitWithDefaultTimeout()
 		Expect(session.ExitCode()).To(Equal(0))
+		Expect(session.OutputToString()).To(Equal(cid))
+	})
+
+	It("podman container start single container by short id", func() {
+		session := podmanTest.Podman([]string{"container", "create", "-d", ALPINE, "ls"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+		cid := session.OutputToString()
+		session = podmanTest.Podman([]string{"container", "start", cid[0:10]})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+		Expect(session.OutputToString()).To(Equal(cid))
 	})
 
 	It("podman start single container by name", func() {
-		session := podmanTest.Podman([]string{"create", "-d", "--name", "foobar99", ALPINE, "ls"})
+		name := "foobar99"
+		session := podmanTest.Podman([]string{"create", "-d", "--name", name, ALPINE, "ls"})
 		session.WaitWithDefaultTimeout()
 		Expect(session.ExitCode()).To(Equal(0))
-		session = podmanTest.Podman([]string{"start", "foobar99"})
+		session = podmanTest.Podman([]string{"start", name})
 		session.WaitWithDefaultTimeout()
 		Expect(session.ExitCode()).To(Equal(0))
+		if podmanTest.RemoteTest {
+			Skip("Container-start name check doesn't work on remote client. It always returns the full ID.")
+		}
+		Expect(session.OutputToString()).To(Equal(name))
 	})
 
 	It("podman start multiple containers", func() {