Try to use gitlab-ci to build the binary as well

.gitlab-ci.yml

@@ -7,4 +7,12 @@ mirror:
         - git pull origin ${CI_COMMIT_REF_NAME}
         - git push -q https://${GITHUB_USERNAME}:${GITHUB_TOKEN}@github.com/${GITHUB_REPO}.git --all
 
+cache:
+    paths:
+        - .m2/repository
+        - target/
 
+build:
+    stage: build
+    script:
+        mvn compile dependency:resolve dependency:sources -Dmaven.test.skip=true -Dmaven.javadoc.skip=true
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