Maven assembly plugin - "install" folder - maven

Question

I have configured maven assembly plugin which generates "tar.gz" file.
However, when I untar, it somehow includes "install" folder at the beginning:
/install/lib
/install/scripts
My requirement is that, upon untar, it should have folders like below, no install directory:
/lib
/scripts
My pom.xml plugin:
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<finalName>install</finalName>
<descriptors>
<descriptor>assembly/app-assembly.xml</descriptor>
</descriptors>
<tarLongFileMode>posix</tarLongFileMode>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
app-assembly.xml:
<assembly
xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
<id>myapp</id>
<formats>
<format>tar.gz</format>
</formats>
<fileSets>
<fileSet>
<directory>${project.basedir}</directory>
<excludes>
<exclude>src/**</exclude>
<exclude>readme.md</exclude>
</excludes>
</fileSet>
<fileSet>
<directory>${project.build.directory}</directory>
<outputDirectory>lib</outputDirectory>
<includes>
<include>*.jar</include>
</includes>
</fileSet>
</fileSets>
</assembly>
Appreciate any help or guidance on this. Thanks for reading.

Answer 1

https://maven.apache.org/plugins/maven-assembly-plugin/assembly.html
includeBaseDirectory: Includes a base directory in the final archive. For example, if you are creating an assembly named "your-app", setting includeBaseDirectory to true will create an archive that includes this base directory. If this option is set to false the archive created will unzip its content to the current directory.
Default value is: true.