Maven构建Docker镜像

<plugin>  
    <groupId>com.spotify</groupId>  
    <artifactId>dockerfile-maven-plugin</artifactId>  
    <version>1.4.13</version>  
    <configuration>  
        <repository>${docker.image.prefix}/${project.artifactId}</repository>  
        <buildArgs>  
            <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>  
        </buildArgs>  
    </configuration>  
</plugin>

<plugin>
       <groupId>com.spotify</groupId>
       <artifactId>dockerfile-maven-plugin</artifactId>
       <version>1.4.13</version>
       <executions>
           <execution>
               <id>build_image</id>
               <phase>package</phase>
               <goals>
                   <!--如果package时不想用docker打包,就注释掉这个goal -->
                   <goal>build</goal>
                   <goal>push</goal>
               </goals>
           </execution>
       </executions>
       <configuration>
           <contextDirectory>${project.basedir}</contextDirectory>
           <useMavenSettingsForAuth>true</useMavenSettingsForAuth>
           <repository>${docker.registry.url}/${docker.namespace}/${project.artifactId}</repository>
           <tag>${project.version}</tag>
           <buildArgs>
               <JAR_FILE>${project.build.finalName}.jar</JAR_FILE>
           </buildArgs>
       </configuration>
   </plugin>

FROM openjdk:8-jdk-alpine  
VOLUME /tmp  
ARG JAR_FILE  
COPY ${JAR_FILE} app.jar  
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

mvn clean package dockerfile:build -DskipTests