Just clean, don't run tests.

.gitlab-ci.yml

@@ -11,9 +11,16 @@ test:
       - .gradle/caches
 
   script:
-    - echo 'Hello world'
+    - ./gradlew clean
 
   after_script:
     # these file change every time but should not be cached
     - rm -f $GRADLE_USER_HOME/caches/modules-2/modules-2.lock
     - rm -fr $GRADLE_USER_HOME/caches/*/plugin-resolution/
+
+
+test_reproducible:
+  script:
+    - "curl -X POST -F token=${RELEASE_CHECK_TOKEN} -F ref=master -F variables[RELEASE_TAG]=${CI_COMMIT_REF_NAME} https://code.briarproject.org/api/v4/projects/61/trigger/pipeline"
+  only:
+    - tags