Provide binary and source distribution artifacts in ci workflow

Change-Id: I98ff14d6931e2d7ae7bea6d36234a27a34aa229b
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8b5f11d..aab4d44 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,9 +4,9 @@
   stage: build
   script:
     - mvn test
-    - mvn install
+    - mvn package -DskipTests=true
   artifacts:
     name: "totalngrams"
     paths:
-      - target/*.jar
-      - target/appassembler/bin/*
+      - target/*.zip
+      - target/*.xz