Question

我可能是docker领域的新手，并尝试将Spring-Boot项目与docker和docker-compose结合使用，但是以某种方式docker-compose无法正常工作。

我正在使用com.spotify maven插件，如春季启动文档中所述。我可以使用spotify插件以及使用docker命令从命令行构建和运行docker映像，但是当我尝试使用docker-compose up时不能。

在这里，我总是收到错误“错误：jarfile /app.jar无效或损坏”。

我确定这与ARG JAR_FILE有关，该文件已从spotify插件传递到docker命令。我不知道如何在docker-compose.yml中设置此ARG_FILE，这样我就可以从docker-compose开始，也只能使用spotify插件运行docker映像。

这是我的设置：

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

http://maven.apache.org/xsd/maven-4.0.0.xsd“> 4.0.0

<groupId>eu.devroyal</groupId>
<artifactId>someProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>someProject</name>
<description>Demo project for Spring Boot</description>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.2.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <postgres.version>42.2.2</postgres.version>
    <docker.image.prefix>eu.devroyal</docker.image.prefix>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>



    <!--dependency>
        <groupId>postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>${postgres.version}</version>
        <scope>runtime</scope>
    </dependency-->
    <!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>${postgres.version}</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-test</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.7</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.4.196</version>

    </dependency>


</dependencies>

<build>
    <finalName>someProject-app</finalName>
    <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>1.3.6</version>
            <configuration>
                <repository>${docker.image.prefix}/${project.artifactId}</repository>
                <buildArgs>
                    <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>
                </buildArgs>
            </configuration>
        </plugin>
    </plugins>
</build>

Dockerfile：

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"]
EXPOSE 8188

docker-compose.yml：

 version: '3'
services:
   web:
        environment:
            - JAR_FILE=target/someProject-app.jar
        build: ./
        ports:
            - "8188:8188"

Answer 1

在构建dockerfile时，必须添加此参数

docker build --build-arg JAR_FILE=jar_file_path .

在docker-compose.yml中执行此操作的替代方法

version: '3'
services:
   web:
      build:
        context: ./
        args:
          JAR_FILE: jar_file_path
      ports:
        - "8188:8188"

Answer 2

我会推荐这种方式

FROM openjdk:8-jdk-alpine
VOLUME /tmp
COPY target/someproject-app.jar /app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
EXPOSE 8188

执行Dockerfile时，将复制目标中的相应jar。

Spring Boot和Docker-compose设置参数

2 个答案: