打包应用到docker

使用maven打包

使用eureka项目作示例。采用copy class文件的方式。

1.添加依赖

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...
<properties>
	...
	<docker.image.prefix>lyyljs</docker.image.prefix>
</properties>
   
   ...
   
   	<build>
	<plugins>
		<plugin>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-maven-plugin</artifactId>
		</plugin>
		
		<plugin>
			<groupId>com.spotify</groupId>
           	<artifactId>dockerfile-maven-plugin</artifactId>
           	<version>1.4.9</version>
           	<configuration>
               	<repository>${docker.image.prefix}/${project.artifactId}</repository>
           	</configuration>

		</plugin>
		
		<plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-dependency-plugin</artifactId>
               <executions>
                   <execution>
                       <id>unpack</id>
                       <phase>package</phase>
                       <goals>
                           <goal>unpack</goal>
                       </goals>
                       <configuration>
                           <artifactItems>
                               <artifactItem>
                                   <groupId>${project.groupId}</groupId>
                                   <artifactId>${project.artifactId}</artifactId>
                                   <version>${project.version}</version>
                               </artifactItem>
                           </artifactItems>
                       </configuration>
                   </execution>
               </executions>
           </plugin>
           
	</plugins>
</build>

2.添加Dockerfile

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FROM openjdk:8-jdk-alpine
VOLUME /tmp
ARG DEPENDENCY=target/dependency
COPY ${DEPENDENCY}/BOOT-INF/lib /app/lib
COPY ${DEPENDENCY}/META-INF /app/META-INF
COPY ${DEPENDENCY}/BOOT-INF/classes /app
ENTRYPOINT ["java","-cp","app:app/lib/*","lyyljs.cloud.eureka.EurekaApplication"]%

3.mvn打包docker镜像

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./mvnw install dockerfile:build

或推送

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./mvnw dockerfile:push

4.run it

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docker run -p 8000:8000 -d lyyljs/eureka

访问localhost:8000，可以看到eureka已经启动起来了。

Spring Boot with Docker