Add recipe for doxygen documentation

.gitlab-ci.yml

@@ -83,3 +83,18 @@ CbmRoot_Merge:
     - pwd
     - cat Dart.cfg
     - $PWD/Dart.sh Nightly Dart.cfg
+
+pages:
+  image: 
+    - alpine
+  tags:
+    - docker
+  script:
+    - apk update && apk add doxygen
+    - doxygen doxygen/cbmDoxyfile.conf
+    - mv html-doc/html public/
+  artifacts:
+    paths:
+      - public
+  only:
+    - doxgen