Function open_config_shallow 

pub fn open_config_shallow<ObjectID: FsVerityHashValue>(
    repo: &Repository<ObjectID>,
    name: &str,
    verity: Option<&ObjectID>,
) -> Result<ImageConfiguration>

Opens and parses a container configuration without following layer references.

Reads only the OCI image configuration itself from the repository without validating that all referenced layers exist. This is faster than open_config when you only need the configuration metadata.

If verity is not provided, manually verifies the content digest matches the expected hash.

Returns the parsed image configuration.