[m2] assembly: How do I set the base directory for creating the zip

[haginow2001-nabble]

How can I set the base directory from which the zip file should be created when 
using the assembly plugin?

My descriptor looks like:

<assembly>
    <formats>
        <format>zip</format>
    </formats>
    <fileSets>
        <fileSet>
            <directory>target/mhave</directory>
            <excludes>
                <exclude>xdocs/**</exclude>
            </excludes>
        </fileSet>
    </fileSets>
</assembly>

My plugin config looks like:

                <!-- maven-assembly-plugin -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-assembly-plugin</artifactId>
                    <configuration>
                        <descriptors>
                            
<descriptor>src/main/assembly/mhave-commons-assembly.xml</descriptor>
                        </descriptors>
                        <workDirectory>target/assembly/work</workDirectory>
                        <outputDirectory>target/releases/</outputDirectory>
                    </configuration>
                </plugin>

            </plugins>

I want to use "target/mhave" as base directory for the zip archive.

Chris