That sounds more like some sort of plugin structure to me. Like build some sort of framework where it is easy to build plugins and then create plugins like "LEGO"-pieces, it won't be separate services but I think it would be easier to work with. Anyways, I don't think docker or actual microservices is the way to go, I'm also thinking you might have some of the terminology mixed up. Or I'm just missunderstanding completly wich wouldn't be supprising either :D
