ODK aggregate docker image for PostgreSQL

Hi,
Thanks for your help.
I first tested the ggalmazor solution:

  • docker, docker-compose are installed correctly
  • for java I install it as shown on http://wp.brodzinski.net/uncategorized/install-latest-java-8-raspbian/
  • downloading the Aggregate git repo in odk folder
  • Run the command ./gradlew clean dockerComposeBuild -xtest -PwarMode=complete but I have this error - Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
    Do you have an idea why the command does not work?
    Thank you in advance,
    Regards