test multi-stage

.gitlab-ci.yml

 stages:
     - build
+    - test
 
-build:
+build_gcc:
     image: rboman/waves
     stage: build
     script:
@@ -9,9 +10,23 @@ build:
         - cd build
         - cmake -Wno-dev -C ../CMake/disable-trilinos.cmake ..
         - make -j 4
-        - ctest -j 4 #--verbose
     artifacts:
         paths:
             - build/bin/
-      
-      
\ No newline at end of file
+
+doxygen:
+    image: rboman/waves
+    stage: test
+    script:
+        - cd build
+        - make dox
+    artifacts:
+        paths:
+            - doxygen/
+                  
+ctest:
+    image: rboman/waves
+    stage: test
+    script:
+        - cd build
+        - ctest -j 4 #--verbose