我开始使用docker,并尝试对我的Spring Boot应用程序进行dockerize。我使用spring initializr生成了这个。我正在和Maven合作。我的DockerFile看起来像这样:
FROM java:8-jdk-alpine
COPY ${JAR_FILE} app.jar
WORKDIR /usr/app
EXPOSE 8080
ENTRYPOINT ["java","-jar","/app.jar"]
这很简单。
我执行了以下命令:
docker build -t shortenurl .
我可以在控制台中看到带有docker images的图像:
但是当我尝试使用以下命令运行映像时:docker run -p 8080:8080 shortenurl
,我收到此错误消息:错误:jarfile /app.jar无效或损坏
我尝试了不同的配置,但不确定。有什么建议吗?
谢谢。
这是我的插件pom.xml插件部分:
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>0.2.3</version>
<configuration>
<imageName>${docker.image.prefix}/${project.artifactId}</imageName>
<dockerDirectory>src/main/docker</dockerDirectory>
<resources>
<resource>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
</plugins>
这是我的命令后的日志:docker build -tshortenurl。
$ docker build -t shortenurl .
Sending build context to Docker daemon 32.89MB
Step 1/5 : FROM java:8-jdk-alpine
---> 3fd9dd82815c
Step 2/5 : COPY ${JAR_FILE} app.jar
---> 248aa4be697d
Step 3/5 : WORKDIR /usr/app
---> Running in 5fcd71c548af
Removing intermediate container 5fcd71c548af
---> bc344b970b11
Step 4/5 : EXPOSE 8080
---> Running in 46b4e4f8e9b7
Removing intermediate container 46b4e4f8e9b7
---> 6b4f55a86a23
Step 5/5 : ENTRYPOINT ["java","-jar","/app.jar"]
---> Running in 838a6052f4c8
Removing intermediate container 838a6052f4c8
---> 7d7d272ea42d
Successfully built 7d7d272ea42d
Successfully tagged shortenurl:latest
SECURITY WARNING: You are building a Docker image from Windows against a non-Windows Docker host. All files and directories added to build context will have '-rwxr-xr-x' permissions. It is recommended to double check and reset permissions for sensitive files and directories.
答案 0 :(得分:0)
您正在使用spring-boot-maven-plugin
进行构建,但没有生成可执行jar。将插件的配置更新为:
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
</configuration>
</plugin>
</plugins>
</build>
你应该没事。