distro/fedora: add container image type

Add a container image type that is based on the existing fedora
container image. There is a delta in terms of the configuration
because osbuild does not yet provide all the neccessary means,
but the package set is already very close.

internal/store/json.go

@@ -374,6 +374,7 @@ var imageTypeCompatMapping = map[string]string{
 	"oci":                            "oci",
 	"gce":                            "GCP",
 	"gce-rhui":                       "GCE RHUI",
+	"container":                      "container",
 }
 
 func imageTypeToCompatString(imgType distro.ImageType) string {