Hostname in spec.hostname should be passed to infra ctr init opt

Fixes https://github.com/containers/podman/issues/12393

Signed-off-by: Qiang Wang <sunsetmask@gmail.com>

pkg/domain/infra/abi/play.go

@@ -287,6 +287,7 @@ func (ic *ContainerEngine) playKubePod(ctx context.Context, podName string, podY
 	if podOpt.Infra {
 		infraImage := util.DefaultContainerConfig().Engine.InfraImage
 		infraOptions := entities.NewInfraContainerCreateOptions()
+		infraOptions.Hostname = podSpec.PodSpecGen.PodBasicConfig.Hostname
 		podSpec.PodSpecGen.InfraImage = infraImage
 		podSpec.PodSpecGen.NoInfra = false
 		podSpec.PodSpecGen.InfraContainerSpec = specgen.NewSpecGenerator(infraImage, false)

test/e2e/play_kube_test.go

@@ -1762,6 +1762,11 @@ var _ = Describe("Podman play kube", func() {
 		inspect.WaitWithDefaultTimeout()
 		Expect(inspect).Should(Exit(0))
 		Expect(inspect.OutputToString()).To(Equal(hostname))
+
+		hostnameInCtr := podmanTest.Podman([]string{"exec", getCtrNameInPod(pod), "hostname"})
+		hostnameInCtr.WaitWithDefaultTimeout()
+		Expect(hostnameInCtr).Should(Exit(0))
+		Expect(hostnameInCtr.OutputToString()).To(Equal(hostname))
 	})
 
 	It("podman play kube test HostAliases", func() {