Our microservices are Java EE 8 web projects, built using maven and published as separate Payara Micro instances, running within docker containers. The separation allows them to scale individually, as well as have independent operational activities. Given the BCE pattern used, we have the business component split into boundary, control, and entity, where the boundary comprises of the web resource (REST endpoint) and business service (EJB). The web resource will publish the CRUD operations and the EJB will in turn provide the transactional support for each of it along with making external calls to other resources.
Here's a logical view for the boundary consisting of the web resource and business service:
