Unable to consume beakerx_kernel_base through jitpack.io

Trying to consume the `beakerx_kernel_base` repo from another Java project through jitpack.io currently [fails](https://jitpack.io/com/github/twosigma/beakerx_Kernel_base/69b4093684/build.log) due to Java 11 not being found. A fix (https://github.com/ajmazurie/beakerx_kernel_base/commit/e6f1e3ddd2bf6d559b188afe5bc9d070b64cb568) was successful in resolving that error but a [second](https://jitpack.io/com/github/ajmazurie/beakerx_kernel_base/fix_jitpack-b719a3112d-1/build.log) one eludes me due to my lack of familiarity with Gradle:
```
> Task :base:jvmInspectJavaDoc FAILED
javadoc: error - Cannot find doclet class com.twosigma.beakerx.doclet.BeakerxDoclet
```

I was wondering if you had an idea about how to make your repo consumable through jitpack.io, hence allowing other projects to easily consume it.