[cicd] deployment to testserver, jar hardcoded

.gitlab-ci.yml

@@ -27,7 +27,6 @@ pages-devel:
   stage: deploy
   script:
     - echo $EXPORT_PAGES_DIR
-    - which jar
     - mkdir .public
     - cp -r css .public
     - cp -r images .public
@@ -36,7 +35,7 @@ pages-devel:
     - cp *.html .public
     - mv .public public
     - cd public
-    - jar -cvf ROOT.war *
+    - /opt/jdk-12/bin/jar -cvf ROOT.war *
     - curl --upload-file ROOT.war -u tomcat:$TOMCATPASS "https://m4lab.hft-stuttgart.de/manager/text/deploy?path=/ROOT&update=true"
   artifacts:
     paths: