gitlab job fixed (npm was missing to compile dependency)

.gitlab-ci.yml

@@ -171,6 +171,10 @@ test_backend web:
   stage: test
   coverage: '/(\d+.\d+) \% covered/'
   script:
+    - apt-get update
+    - DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git ant
+    - curl -sL https://deb.nodesource.com/setup_9.x | bash -
+    - DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs
     - mkdir /etc/minerva/
     - cp test-db-ci.properties /etc/minerva/db.properties
     - mvn -DskipTests=true clean install -pl web -am