Use the full container version for build_version

src/bci_build/registry.py

@@ -49,7 +49,7 @@ def registry_prefix(*, is_application: bool) -> str:
     @staticmethod
     def build_version(base_version, container: "BaseContainerImage") -> str:
         """Return the build version to set for this container build."""
-        container_version: str = container.tag_version
+        container_version = container.version
         # if container_version is a numeric version and not a macro, then
         # version.parse() returns a `Version` object => then we concatenate
         # it with the existing build_version