Ideally all the concepts in https://bulker.databio.org/en/latest/manifest/ could be represented by labels inside the software container already
That way container authors can include these up front and (bulker) users won't have to figure them out themselves.
Of course these container-author provided configurations should be customizable/overridable by bulker manifest authors.
Ideally the standardized labels are used, when possible
https://github.com/opencontainers/image-spec/blob/master/annotations.md#pre-defined-annotation-keys
Once this is defined, this could be adopted by software container maintenance communities like biocontainers.pro