Using JaCoCo with Google Cloudbuild

[Tamás]

Hi

We would like to use JaCoCo with Google Cloudbuild, but we face a problem with the required "rules" configuration.

Our cloudbuild step would look like this:

- name: 'gcr.io/cloud-builders/mvn:3.5.0-jdk-8'

  dir: '/'

  id: 'JaCoCo coverage check'

  args: ['org.jacoco:jacoco-maven-plugin:0.8.6:check']

Problem is that it seems the "rules" are only accepted as a configuration in a pom.xml and we couldn't pass just as a parameter like   
args: ['org.jacoco:jacoco-maven-plugin:0.8.6:check', '-Djacoco.coveredratio=70']

Can you please recommend any workaround for this?

Regards
Tamas