Generate cri-o container runtime preload tarball

Author: afbjorklund

hack/preload-images/generate.go

@@ -137,6 +137,10 @@ func imagePullCommand(containerRuntime, img string) *exec.Cmd {
 	if containerRuntime == "containerd" {
 		return exec.Command("docker", "exec", profile, "sudo", "crictl", "pull", img)
 	}
+
+	if containerRuntime == "cri-o" {
+		return exec.Command("docker", "exec", profile, "sudo", "crictl", "pull", img)
+	}
 	return nil
 }
 
@@ -154,6 +158,10 @@ func createImageTarball(tarballFilename, containerRuntime string) error {
 		dirs = append(dirs, fmt.Sprintf("./lib/containerd"))
 	}
 
+	if containerRuntime == "cri-o" {
+		dirs = append(dirs, fmt.Sprintf("./lib/containers"))
+	}
+
 	args := []string{"exec", profile, "sudo", "tar", "-I", "lz4", "-C", "/var", "-cvf", tarballFilename}
 	args = append(args, dirs...)
 	cmd := exec.Command("docker", args...)

hack/preload-images/preload_images.go

@@ -37,7 +37,7 @@ const (
 
 var (
 	dockerStorageDriver = "overlay2"
-	containerRuntimes   = []string{"docker", "containerd"}
+	containerRuntimes   = []string{"docker", "containerd", "cri-o"}
 	k8sVersion          string
 	k8sVersions         []string
 )