extension: Support multiple manifests

blueos_repository/extension/extension.py

@@ -137,7 +137,8 @@ async def __extract_valid_embedded_digest(self, fetch: ManifestFetch) -> str:
         # Manifest list
         valid_manifests = [entry for entry in fetch.manifest.manifests if self.__is_compatible(entry.platform)]
         if len(valid_manifests) != 1:
-            raise RuntimeError(
+            Logger.warning(
+                self.identifier,
                 f"Expected one valid manifest for target embedded arch but found: {len(valid_manifests)}"
             )