基于Dockerfile+Maven插件为SpringBoot应用构建镜像（推荐）
简介
本示例使用Dockerfile + docker-maven-plugin插件的方式 ，为SpringBoot应用构建镜像（推荐）。
推荐的理由： 打包时自动构建镜像且可以通过
Dockerfile灵活配置，可以在构建时执行一些其他的脚本
docker开启远程API
参考：基于Maven插件为SpringBoot应用构建镜像（一）
编写Dockerfile文件
# 该镜像需要依赖的基础镜像
FROM java:8
# 将当前目录下的jar包复制到docker容器的/目录下
ADD dockerfile-maven-example-0.0.1-SNAPSHOT.jar /app.jar
# 运行过程中更改 `app.jar` 文件的访问时间和修改时间
RUN bash -c 'touch /app.jar'
# 声明服务运行在8803端口
EXPOSE 8803
# 指定docker容器启动时运行jar包
ENTRYPOINT ["java", "-jar","/app.jar"]
# 指定维护者的名字
MAINTAINER tuonioooo使用maven打包应用
pom.xml 文件中添加 docker-maven-plugin 依赖
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
<!--配置docker打包插件-->
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>1.1.0</version>
<!--
WARNING: The following warnings have been detected: WARNING: HK2 service reification failed for [org.glassfish.jersey.message.internal.DataSourceProvider] with an exception:
@see https://github.com/spotify/dockerfile-maven/issues/90
添加如下依赖解决问题
-->
<dependencies>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<!--如果想在项目打包时构建镜像添加 `mvn clean -DskipTests package` 会同时构建镜像 相当于 mvn clean -DskipTests package docker:build -->
<executions>
<execution>
<id>build-image</id>
<phase>package</phase>
<goals>
<goal>build</goal>
</goals>
</execution>
</executions>
<configuration>
<!-- 配置docker服务器地址 -->
<dockerHost>http://192.168.217.144:2375</dockerHost>
<imageName>my_df_maven/${project.name}:${project.version}</imageName> <!--镜像名称-->
<!-- 配置Dockerfile目录 说明：配置dockerDirectory后会忽略掉pom里的baseImage, maintainer, cmd and entryPoint配置, 只保留resources配置 -->
<dockerDirectory>${project.basedir}/docker</dockerDirectory>
<forceTags>true</forceTags><!--覆盖已存在的标签 镜像-->
<resources>
<resource>
<targetPath>/</targetPath><!-- 将打包后的资源文件复制到该目录，如果定义了dockerDirectory，将会复制到 dockerDirectory目录下 -->
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
<include>classes/1.txt</include>
</resource>
</resources>
</configuration>
</plugin>
</plugins>
</build>使用idea maven插件打包
输出信息
[INFO] Building image my_df_maven/dockerfile-maven-example:0.0.1-SNAPSHOT
Step 1/6 : FROM java:8
---> d23bdf5b1b1b
Step 2/6 : ADD dockerfile-maven-example-0.0.1-SNAPSHOT.jar /app.jar
---> a88647ddac35
Step 3/6 : RUN bash -c 'touch /app.jar'
---> Running in e0bddec529fb
Removing intermediate container e0bddec529fb
---> c8c194b4f590
Step 4/6 : EXPOSE 8803
---> Running in ac936d667921
Removing intermediate container ac936d667921
---> ebab14222c4b
Step 5/6 : ENTRYPOINT ["java", "-jar","/app.jar"]
---> Running in 0f33bb18b5c8
Removing intermediate container 0f33bb18b5c8
---> c3bc601f3589
Step 6/6 : MAINTAINER tuonioooo
---> Running in 8f8705ac91ca
Removing intermediate container 8f8705ac91ca
---> 75b139958077
ProgressMessage{id=null, status=null, stream=null, error=null, progress=null, progressDetail=null}
Successfully built 75b139958077
Successfully tagged my_df_maven/dockerfile-maven-example:0.0.1-SNAPSHOT
[INFO] Built my_df_maven/dockerfile-maven-example:0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 29.940 s
[INFO] Finished at: 2022-11-02T12:14:55+08:00
[INFO] ------------------------------------------------------------------------
Process finished with exit code 0
docker服务器地址（我的是192.168.217.144）, 查看结果
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
my_df_maven/dockerfile-maven-example 0.0.1-SNAPSHOT 75b139958077 8 minutes ago 699MB
my_dfile/dockerfile-example 0.0.1-SNAPSHOT ce44f6e0bb51 3 hours ago 699MB
my_spotify/docker-plugin-example 0.0.1-SNAPSHOT 1d0c230e41ed 14 hours ago 671MB
my/docker-plugin-example 0.0.1-SNAPSHOT 22962486feee 18 hours ago 671MB
nginx latest 605c77e624dd 10 months ago 141MB
redis latest 7614ae9453d1 10 months ago 113MB
mysql 5.7 c20987f18b13 10 months ago 448MB
jenkins/jenkins lts 2a4bbe50c40b 11 months ago 441MB
java 8 d23bdf5b1b1b 5 years ago 643MB启动
删除旧容器和镜像
docker stop dockerfile-maven-01
echo '----stop container----'
docker rm dockerfile-maven-01
echo '----rm container----'
docker rmi `docker images | grep none | awk '{print $3}'`
或
docker rmi $(docker images -f "dangling=true" -q)
或
docker image prune
echo '----rm none images----'启动docker
mkdir -p /mount/apps/dockerfile-maven-example/logs
docker run -p 8803:8803 --name dockerfile-maven-01 \
-v /etc/localtime:/etc/localtime \
-v /mount/apps/dockerfile-maven-example/logs:/logs \
-d my_df_maven/dockerfile-maven-example:0.0.1-SNAPSHOT进行访问测试，地址：http://192.168.217.144:8803/swagger-ui.html
演示项目地址
https://gitee.com/ecs-common-deploy/dockerfile-maven-example.git
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