Only install to custom folder - maven

Question

I have a multimodule project in maven. I want the modules to be installed in the repository location I want. I want to also keep outside generated dependencies in the main .m2 folder.
Then my idea is to use something like this to include my project generated dependencies.
<repositories>
<!--other repositories if any-->
<repository>
<id>project.local</id>
<name>project</name>
<url>file:${project.basedir}/repo</url>
</repository>
</repositories>
I have tried maven-install-plugin but it installs my generated modules to both the main local and the project repo.
Can you give me any advice on how to do so?
Edit: Include maven-install-plugin configuration that is not working properly as it installs in both local and project repository
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
<executions>
<execution>
<id>install-jar-lib</id>
<goals>
<goal>install-file</goal>
</goals>
<phase>install</phase>
<configuration>
<file>${project.build.directory}/${project.build.finalName}.jar</file>
<generatePom>false</generatePom>
<pomFile>pom.xml</pomFile>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<skip>true</skip>
<localRepositoryPath>./mylocalrepo</localRepositoryPath>
</configuration>
</execution>
</executions>
</plugin>