diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 787fd016cd9ef627e8a5354ef15cae7176dea971..e6d260a19f9a2830dee4d2622a919f1610bfd2fc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,6 +24,9 @@ pages:
   tags:
     - corsika
   script:
+    - mkdir build
+    - cd build
+    - cmake ..
     - make doxygen
     - mkdir .public
     - cp -r Documentation/Doxygen/html .public/