addresss comments

docs/getting-started.md

@@ -248,7 +248,7 @@ job = realis.NewJob().
     Disk(100).
     IsService(false).
     Production(false).
-		Tier("preemptible").
+    Tier("preemptible").
 		Priority(0).
     InstanceCount(1).
     AddPorts(1).

task.go

@@ -79,14 +79,16 @@ func TaskFromThrift(config *aurora.TaskConfig) *AuroraTask {
 		Name(config.Job.Name).
 		MaxFailure(config.MaxTaskFailures).
 		IsService(config.IsService).
-		Priority(config.Priority).
-		Tier(*config.Tier).
-		Production(*config.Production)
+		Priority(config.Priority)
 
 	if config.Tier != nil {
 		newTask.Tier(*config.Tier)
 	}
 
+	if config.Production != nil {
+		newTask.Production(*config.Production)
+	}
+
 	if config.ExecutorConfig != nil {
 		newTask.
 			ExecutorName(config.ExecutorConfig.Name).