test.java

// API
public interface CubeController {
  
    <T> T createContainerObject(Class<T> containerClass);
    
}


// CORE
public interface CubeControllerClient {
    
    @Inject
    private Instance<ServiceLoader> loader;
  
    public <T> T createContainerObject(Class<T> containerClass) {
      T container = loader.onlyOne(ContainerObjectCreator.class).create(containerClass);
      for(TestEnricher enricher : loader.all(TestEnrichers.class)) {
        enricher.enrich(container);
      }
      return container;
    }
  
}

// SPI
public interface ContainerObjectCreator {
  
  <T> T create(Class<T> container);
}

// DOCKER
public class DockerContainerObjectCreator implements ContainerObjectCreator{
  
  <T> T create(Class<T> container) {
    return goMagic()
  }
}