feat: add shm_size support in Compose and --shm-size flag for 'uc run' (closes #267)

internal/machine/docker/server.go

@@ -642,6 +642,7 @@ func (s *Server) CreateServiceContainer(
 		RestartPolicy: container.RestartPolicy{
 			Name: container.RestartPolicyUnlessStopped,
 		},
+		ShmSize: spec.Container.Resources.SharedMemory,
 		Sysctls: spec.Container.Sysctls,
 	}