add nodejs package to ci

.gitlab-ci.yml

@@ -20,6 +20,7 @@ before_script:
   - apt-get install default-jre postgresql-client -y
   - apt-get remove --purge --auto-remove redis-server -y
   - apt-get install redis-server -y
+  - apt-get install nodejs -y
   # official way to provide password to psql: http://www.postgresql.org/docs/9.3/static/libpq-envars.html
   - export PGPASSWORD=$POSTGRES_PASSWORD
   - psql -h "postgres" -U "$POSTGRES_USER" -d "$POSTGRES_DB" -c "SELECT 'OK' AS status;"