Maven的Docker插件绑定在某个phase执行

一场景

某些场景下，有这样的需求，执行例如mvn clean package时，插件就自动构建Docker镜像。要想实现这点，只须将插件的goal绑定在某个phase即可。

phase和goal可以这样理解

maven 命令格式是：mvn phase:goal，例如mvn package docker:build。那么，package和docker都是phase，build则是goal。

二修改pom.xml

[root@master microservice-discovery-eureka]# cat pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.itmuch.cloud</groupId>
  <artifactId>microservice-discovery-eureka</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <!-- 引入spring boot的依赖 -->
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.2.RELEASE</version>
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-eureka-server</artifactId>
    </dependency>
  </dependencies>

  <!-- 引入spring cloud的依赖 -->
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>Camden.SR2</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>


  <build>
    <plugins>
      <!-- 添加spring-boot的maven插件 -->
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>

      <plugin>
        <groupId>com.spotify</groupId>
        <artifactId>docker-maven-plugin</artifactId>
        <version>0.4.13</version>
        <executions>
          <execution>
            <id>build-image</id>
            <phase>package</phase>
            <goals>
              <goal>build</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <imageName>itmuch/microservice-discovery-eureka:0.0.3</imageName>
          <baseImage>java</baseImage>
          <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
          <resources>
            <resource>
              <targetPath>/</targetPath>
              <directory>${project.build.directory}</directory>
              <include>${project.build.finalName}.jar</include>
            </resource>
          </resources>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

由配置可知，只须添加如下配置：

<executions>
          <execution>
            <id>build-image</id>
            <phase>package</phase>
            <goals>
              <goal>build</goal>
            </goals>
          </execution>
        </executions>

就可将插件绑定在package这个phase上。也就是说，用户只须执行mvn package，就会自动执行mvn docker:build。

三执行如下命令，构建Docker镜像

[root@master microservice-discovery-eureka]# mvn clean package
[root@master microservice-discovery-eureka]# docker images
REPOSITORY                                    TAG                 IMAGE ID            CREATED             SIZE
itmuch/microservice-discovery-eureka          0.0.3               79a4b2221633        27 seconds ago      685MB

四启动镜像

[root@master microservice-discovery-eureka]# docker run -d -p 8761:8761 itmuch/microservice-discovery-eureka:0.0.3
46ff4e4e5d11f2843075790a2ae3a2f03a6f0f56cd6b19bb305d550646d0ab75

五测试

http://192.168.0.102:8761/

Maven的Docker插件绑定在某个phase执行

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