fix play kube can't use infra_image in config file

Signed-off-by: Chen Zhiwei <zhiweik@gmail.com>

pkg/domain/infra/abi/play.go

@@ -267,12 +267,9 @@ func (ic *ContainerEngine) playKubePod(ctx context.Context, podName string, podY
 	}
 
 	if podOpt.Infra {
-		imagePull := config.DefaultInfraImage
+		containerConfig := util.DefaultContainerConfig()
-		if podOpt.InfraImage != config.DefaultInfraImage && podOpt.InfraImage != "" {
-			imagePull = podOpt.InfraImage
-		}
 
-		pulledImages, err := pullImage(ic, writer, imagePull, options, config.PullPolicyNewer)
+		pulledImages, err := pullImage(ic, writer, containerConfig.Engine.InfraImage, options, config.PullPolicyNewer)
 		if err != nil {
 			return nil, err
 		}

test/e2e/play_kube_test.go

@@ -11,6 +11,7 @@ import (
 	"text/template"
 	"time"
 
+	"github.com/containers/common/pkg/config"
 	"github.com/containers/podman/v3/pkg/util"
 	. "github.com/containers/podman/v3/test/utils"
 	"github.com/containers/storage/pkg/stringid"
@@ -30,6 +31,22 @@ metadata:
 spec:
   hostname: unknown
 `
+var checkInfraImagePodYaml = `
+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    app: check-infra-image
+  name: check-infra-image
+spec:
+  containers:
+    - name: alpine
+      image: quay.io/libpod/alpine:latest
+      command:
+        - sleep
+        - 24h
+status: {}
+`
 var sharedNamespacePodYaml = `
 apiVersion: v1
 kind: Pod
@@ -1098,6 +1115,55 @@ var _ = Describe("Podman play kube", func() {
 		Expect(label).To(ContainSubstring("unconfined_u:system_r:spc_t:s0"))
 	})
 
+	It("podman play kube should use default infra_image", func() {
+		err := writeYaml(checkInfraImagePodYaml, kubeYaml)
+		Expect(err).To(BeNil())
+
+		kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube).Should(Exit(0))
+
+		podInspect := podmanTest.Podman([]string{"inspect", "check-infra-image", "--format", "{{ .InfraContainerID }}"})
+		podInspect.WaitWithDefaultTimeout()
+		infraContainerID := podInspect.OutputToString()
+
+		conInspect := podmanTest.Podman([]string{"inspect", infraContainerID, "--format", "{{ .ImageName }}"})
+		conInspect.WaitWithDefaultTimeout()
+		infraContainerImage := conInspect.OutputToString()
+		Expect(infraContainerImage).To(Equal(config.DefaultInfraImage))
+	})
+
+	It("podman play kube should use customized infra_image", func() {
+		conffile := filepath.Join(podmanTest.TempDir, "container.conf")
+
+		infraImage := "k8s.gcr.io/pause:3.2"
+		err := ioutil.WriteFile(conffile, []byte(fmt.Sprintf("[engine]\ninfra_image=\"%s\"\n", infraImage)), 0644)
+		Expect(err).To(BeNil())
+
+		os.Setenv("CONTAINERS_CONF", conffile)
+		defer os.Unsetenv("CONTAINERS_CONF")
+
+		if IsRemote() {
+			podmanTest.RestartRemoteService()
+		}
+
+		err = writeYaml(checkInfraImagePodYaml, kubeYaml)
+		Expect(err).To(BeNil())
+
+		kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube).Should(Exit(0))
+
+		podInspect := podmanTest.Podman([]string{"inspect", "check-infra-image", "--format", "{{ .InfraContainerID }}"})
+		podInspect.WaitWithDefaultTimeout()
+		infraContainerID := podInspect.OutputToString()
+
+		conInspect := podmanTest.Podman([]string{"inspect", infraContainerID, "--format", "{{ .ImageName }}"})
+		conInspect.WaitWithDefaultTimeout()
+		infraContainerImage := conInspect.OutputToString()
+		Expect(infraContainerImage).To(Equal(infraImage))
+	})
+
 	It("podman play kube should share ipc,net,uts when shareProcessNamespace is set", func() {
 		SkipIfRootless("Requires root privileges for sharing few namespaces")
 		err := writeYaml(sharedNamespacePodYaml, kubeYaml)