bib: add vhd to supported image types

This is the coresponding change to the images PR [0] that adds
support to build `vhd` type images directly via bib.

[0] osbuild/images#909

bib/cmd/bootc-image-builder/build_type.go

@@ -18,6 +18,7 @@ var supportedImageTypes = map[string]BuildType{
 	"qcow2":        BuildTypeDisk,
 	"raw":          BuildTypeDisk,
 	"vmdk":         BuildTypeDisk,
+	"vhd":          BuildTypeDisk,
 	"anaconda-iso": BuildTypeISO,
 	"iso":          BuildTypeISO,
 }

bib/cmd/bootc-image-builder/main.go

@@ -437,7 +437,8 @@ func cmdBuild(cmd *cobra.Command, args []string) error {
 			exports = append(exports, "image")
 		case "vmdk":
 			exports = append(exports, "vmdk")
-
+		case "vhd":
+			exports = append(exports, "vhd")
 		case "anaconda-iso", "iso":
 			exports = append(exports, "bootiso")
 		default:

test/test_build.py

@@ -134,6 +134,7 @@ def build_images(shared_tmpdir, build_container, request, force_aws_upload):
         "ami": pathlib.Path(output_path) / "image/disk.raw",
         "raw": pathlib.Path(output_path) / "image/disk.raw",
         "vmdk": pathlib.Path(output_path) / "vmdk/disk.vmdk",
+        "vhd": pathlib.Path(output_path) / "vmdk/disk.vhd",
         "anaconda-iso": pathlib.Path(output_path) / "bootiso/install.iso",
     }
     assert len(artifact) == len(set(tc.image for tc in gen_testcases("all"))), \
@@ -453,7 +454,7 @@ def test_iso_installs(image_type):
 @pytest.mark.parametrize("images", gen_testcases("multidisk"), indirect=["images"])
 def test_multi_build_request(images):
     artifacts = set()
-    expected = {"disk.qcow2", "disk.raw", "disk.vmdk"}
+    expected = {"disk.qcow2", "disk.raw", "disk.vhd", "disk.vmdk"}
     for result in images:
         filename = os.path.basename(result.img_path)
         assert result.img_path.exists()