the generated jar file has wrong name xxx-unspecified-runner.jar

it seems the quarkus plugin generate wrong filename. ie: `xxx-unspecified-runner.jar` in stead of `xxx-runner.jar`
what i should have to change to generate good filename?

this is the output of a build:
```
./gradlew xxx:jib

> Task :xxx:quarkusGenerateCode
preparing quarkus application

> Task :xxx:jib FAILED
Running extension: com.google.cloud.tools.jib.gradle.extension.quarkus.JibQuarkusExtension
Running Quarkus Jib extension

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':xxx:jib'.
> error running extension 'com.google.cloud.tools.jib.gradle.extension.quarkus.JibQuarkusExtension': /home/lfarkas/work/test/java/xxx/build/xxx-runner.jar doesn't exist; did you run the Qaurkus Gradle plugin ('quarkusBuild' task)?
```
anyway if i rename `xxx-unspecified-runner.jar` to `xxx-runner.jar` then the result is working.