diff --git a/Dockerfile b/Dockerfile
index d4feece..428d504 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-         FROM openjdk:8
+FROM openjdk:8
 
 ARG GOPRIVATE=bdware.org/*
 ARG GOPROXY=https://goproxy.cn
diff --git a/src/main/java/org/bdware/server/nodecenter/NodeCenterWSFrameHandler.java b/src/main/java/org/bdware/server/nodecenter/NodeCenterWSFrameHandler.java
index ea36ccf..9f20d7e 100644
--- a/src/main/java/org/bdware/server/nodecenter/NodeCenterWSFrameHandler.java
+++ b/src/main/java/org/bdware/server/nodecenter/NodeCenterWSFrameHandler.java
@@ -36,7 +36,6 @@ public class NodeCenterWSFrameHandler extends SimpleChannelInboundHandler<WebSoc
         logActions = new LogActions(managerAction);
         unitActions = new UnitActions(managerAction);
         fileActions = new FileActions(this);
-
         ae =
                 new ActionExecutor<ResultCallback, JsonObject>(
                         executorService, managerAction, logActions, unitActions, fileActions, new MetaIndexAction(), new TracingAction()) {