Update prepare.sh

.gitlab-ci/prepare.sh

@@ -9,7 +9,7 @@ add_ndt_core_yaml() {
 setup_apt() {
     #    echo "Here you can define repo with our package";
     wget -O - http://130.243.98.216/repos/apt/conf/public.gpg.key | apt-key add -
-    echo "deb http://130.243.98.216/repos/apt/debian xenial main" >> /etc/apt/sources.list
+    echo "deb http://130.243.98.216/repos/apt/ubuntu xenial main" >> /etc/apt/sources.list
     
     apt-get update -qq #> /dev/null
 }