fix #38362: create blob vhds container if not exists

Signed-off-by: Huamin Chen <hchen@redhat.com>

pkg/cloudprovider/providers/azure/azure_blob.go

@@ -19,6 +19,7 @@ package azure
 import (
 	"fmt"
 	"regexp"
+	"strings"
 
 	azs "github.com/Azure/azure-sdk-for-go/storage"
 )
@@ -40,9 +41,20 @@ func (az *Cloud) createVhdBlob(accountName, accountKey, name string, sizeGB int6
 	// Blob name in URL must end with '.vhd' extension.
 	name = name + ".vhd"
 	err = blobClient.PutPageBlob(vhdContainerName, name, vhdSize, tags)
+	if err != nil {
+		// if container doesn't exist, create one and retry PutPageBlob
+		detail := err.Error()
+		if strings.Contains(detail, errContainerNotFound) {
+			err = blobClient.CreateContainer(vhdContainerName, azs.ContainerAccessTypeContainer)
+			if err == nil {
+				err = blobClient.PutPageBlob(vhdContainerName, name, vhdSize, tags)
+			}
+		}
+	}
 	if err != nil {
 		return "", "", fmt.Errorf("failed to put page blob: %v", err)
 	}
+
 	// add VHD signature to the blob
 	h, err := createVHDHeader(uint64(size))
 	if err != nil {