Create an executable fat jar with maven

pom.xml

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>3.2.4</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>
            <configuration>
                <transformers>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <mainClass>no.krex.jfxdemo.HelloApplicationKt</mainClass>
                    </transformer>
                </transformers>
            </configuration>
        </execution>
    </executions>
</plugin>

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>exec-maven-plugin</artifactId>
    <version>3.0.0</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>exec</goal>
            </goals>
        </execution>
    </executions>
    <configuration>
        <executable>sh</executable>
        <arguments>
            <argument>-c</argument>
            <argument>echo "$SHEBANGHEADER" | cat - target/jfx-demo-1.0-SNAPSHOT.jar > target/executable-jfx-demo-1.0-SNAPSHOT.jar</argument>
        </arguments>
        <environmentVariables>
            <SHEBANGHEADER>#!/bin/sh

                exec java -jar $0 "$@" > /dev/null

            </SHEBANGHEADER>
        </environmentVariables>
    </configuration>
</plugin>