Buildpack: customisation needed to add opentelemetry - spring

Question

I'm checking into buildpacks to create container images without Dockerfiles. Spring Boot’s build plugin uses a BuildPack builder image which will automatically detect that it's a spring boot application and builds the relevant image for us.
Now my question is, When i am running below maven command
mvn -f $GITHUB_WORKSPACE/pom.xml -pl service spring-boot:build-image -B -e -Dspring-boot.build-image.imageName="${{steps.acr_repo_server.outputs.acr_server}}/${{steps.acr_repo_server.outputs.acr_repository_name}}/${{inputs.microservice_name}}:${{ inputs.build_version }}" -Dmaven.test.skip=true -Dmaven.repo.local=${{ github.workspace }}/.m2/repository
I can see it internally uses below 6 buildpack for the application.
[INFO] [creator] 6 of 24 buildpacks participating
[INFO] [creator] paketo-buildpacks/ca-certificates 3.2.4
[INFO] [creator] paketo-buildpacks/bellsoft-liberica 9.3.7
[INFO] [creator] paketo-buildpacks/syft 1.12.0
[INFO] [creator] paketo-buildpacks/executable-jar 6.2.4
[INFO] [creator] paketo-buildpacks/dist-zip 5.2.4
[INFO] [creator] paketo-buildpacks/spring-boot 5.12.0
How can i add or ask maven to add this buildpack paketo-buildpacks/opentelemetry as well ? Is there any way to customise it or manually pass open telemetry build pack as an argument.

Answer 1

You can add Opentelemetry to the end of the existing buildpack list. See the example in the docs here.
pack build samples/java -b urn:cnb:builder:paketo-buildpacks/java -b paketo-buildpacks/opentelemetry -e BP_OPENTELEMETRY_ENABLED=true
With Spring Boot see the Maven and Gradle examples.
<project>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<image>
<buildpacks>
<buildpack>urn:cnb:builder:paketo-buildpacks/java</buildpack>
<buildpack>gcr.io/paketo-buildpacks/opentelemetry</buildpack>
</buildpacks>
<env>
<BP_OPENTELEMETRY_ENABLED>true</BP_OPENTELEMETRY_ENABLED>
</env>
</image>
</configuration>
</plugin>
</plugins>
</build>
</project>