Change image type to centos

.gitlab-ci.yml

-# This file is a template, and might need editing before it works on your project.
-# Official Java image. Look for the different tagged releases at
-# https://hub.docker.com/r/library/java/tags/ . A Java image is not required
-# but an image with a JVM speeds up the build a bit.
-image: java:8
+image: centos:7
 
 variables:
   XILINXD_LICENSE_FILE: "/opt/cad/keys/xilinx"