Query DinD instances for running containers and list the published ports

so the user can reverse proxy to the instance/port easily.

services/broadcast_info_task.go

@@ -4,5 +4,5 @@ type broadcastInfoTask struct {
 }
 
 func (c *broadcastInfoTask) Run(i *Instance) {
-	wsServer.BroadcastTo(i.session.Id, "instance stats", i.Name, i.Mem, i.Cpu, i.IsManager)
+	wsServer.BroadcastTo(i.session.Id, "instance stats", i.Name, i.Mem, i.Cpu, i.IsManager, i.Ports)
 }