Invalid or corrupted jarfile - Docker

Question

i'm creating a docker image to my automation test project, but i always got the error below

Can you help me please?

Error: Invalid or corrupt jarfile javarestassuredextentreport.jar

Obs: When i generating jar file, it comes do the folder Artifacts, bug i dragged to the target, is it correct?

My projetct is base on Rest Assured, TestNG, JUnit and to create this image, i'm using dockerfile-maven-plugin from spotity.com

Here are my code and pathenter image description here

This is my 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/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>javarestassuredextentreport</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
    <plugins>
        <plugin>
            <groupId>com.spotify</groupId>
            <artifactId>dockerfile-maven-plugin</artifactId>
            <version>1.4.13</version>
            <executions>
                <execution>
                    <id>default</id>
                    <goals>
                        <goal>build</goal>
                        <goal>push</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <repository>maven-4-openjdk-17</repository>
                <tag>${project.version}</tag>
                <buildArgs>
                    <JAR_FILE>${project.build.finalName}.jar</JAR_FILE>
                </buildArgs>
            </configuration>
        </plugin>
    </plugins>
    </build>
    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
            <version>RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/io.rest-assured/rest-assured -->
        <dependency>
            <groupId>io.rest-assured</groupId>
            <artifactId>rest-assured</artifactId>
            <version>5.3.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.rest-assured</groupId>
            <artifactId>rest-assured</artifactId>
            <version>5.3.2</version>
            <scope>compile</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.json/json -->
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20230618</version>
        </dependency>
        <dependency>
            <groupId>com.aventstack</groupId>
            <artifactId>extentreports</artifactId>
            <version>5.0.9</version>
        </dependency>
        <dependency>
            <groupId>com.aventstack</groupId>
            <artifactId>extentreports-testng-adapter</artifactId>
            <version>1.2.2</version>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>7.8.0</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>3.2.2</version>
            <type>maven-plugin</type>
        </dependency>
    </dependencies>
</project>

And this is my dockerfile

FROM openjdk:17
RUN mkdir app
ARG JAR_FILE
ADD /target/${JAR_FILE} /app/javarestassuredextentreport.jar
WORKDIR /app
ENTRYPOINT java -jar javarestassuredextentreport.jar

Answer 1

You need to have an executable jar. Your Maven pom.xml currently does not create it.

To get an executable jar, the archive needs to contain a META-INF/MANIFEST.MF that declares which of the jar's classes is the main class. While you could create instructions yourself to get the task done, Maven has easy to use functionality to achieve the same. Add this plugin to your pom.xml's plugins:

org.apache.maven.plugins maven-jar-plugin true com.mycompany.app.App

Of course you need to list your main class, not the one given in the example. To verify if your jar is ready to be placed inside the container, just run

java -jar target/javarestassuredextentreport.jar

and expect your application to startup in a meaningful way. Only then proceed to wrap it into the container.