diff --git a/pom.xml b/pom.xml
index a791cf6..e769f23 100644
--- a/pom.xml
+++ b/pom.xml
@@ -227,6 +227,7 @@ under the License.
     </pluginRepositories>
 
     <build>
+        <finalName>${project.artifactId}-${project.version}</finalName>
         <pluginManagement>
             <plugins>
                 <!-- set versions of common plugins for reproducibility, ordered alphabetically -->
@@ -485,7 +486,7 @@ under the License.
             <plugin>
                 <groupId>com.spotify</groupId>
                 <artifactId>docker-maven-plugin</artifactId>
-                <version>0.4.11</version>
+                <version>1.2.2</version>
                 <dependencies>
                     <dependency>
                         <groupId>javax.activation</groupId>
@@ -496,11 +497,13 @@ under the License.
                 </dependencies>
                 <configuration>
                     <imageName>${docker.image.prefix}/${project.artifactId}</imageName>
+                    <baseImage>openjdk:8-alpine</baseImage>
+                    <workdir>/</workdir>
                     <imageTags>
                         <imageTag>${project.version}</imageTag>
                         <imageTag>latest</imageTag>
                     </imageTags>
-                    <dockerDirectory>src/main/docker</dockerDirectory>
+                    <entryPoint>["java", "-jar", "${project.build.finalName}-exec.jar"]</entryPoint>
                     <resources>
                         <resource>
                             <targetPath>/</targetPath>
diff --git a/src/main/docker/Dockerfile b/src/main/docker/Dockerfile
deleted file mode 100644
index 792939a..0000000
--- a/src/main/docker/Dockerfile
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You under the Apache License, Version 2.0
-# (the "License"); you may not use this file except in compliance with
-# the License.  You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-FROM java:8
-MAINTAINER breeze
-ADD rocketmq-exporter-0.0.2-SNAPSHOT-exec.jar rocketmq-exporter.jar
-EXPOSE 5557
-ENTRYPOINT ["java","-jar","rocketmq-exporter.jar"]
diff --git a/src/main/java/org/apache/rocketmq/exporter/task/MetricsCollectTask.java b/src/main/java/org/apache/rocketmq/exporter/task/MetricsCollectTask.java
index e2e5f00..d8d84d2 100644
--- a/src/main/java/org/apache/rocketmq/exporter/task/MetricsCollectTask.java
+++ b/src/main/java/org/apache/rocketmq/exporter/task/MetricsCollectTask.java
@@ -716,7 +716,7 @@ public void collectBrokerGroupStats() {
             String brokerName = clusterEntry.getValue().getBrokerName();
             String masterAddr = clusterEntry.getValue().getBrokerAddrs().get(MixAll.MASTER_ID);
             for (Map.Entry<Long, String> broker : clusterEntry.getValue().getBrokerAddrs().entrySet()) {
-                if(broker.getKey() == MixAll.MASTER_ID) {
+                if (broker.getKey() == MixAll.MASTER_ID) {
                     continue;
                 }
                 BrokerRuntimeStats slaveRuntimeStats = getBrokerRuntimeStats(broker.getValue());