Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -7,10 +7,11 @@ cache:
 
 pages:
   script:
-    - ls -la . cas
     - mkdir -p cas/_build/.jupyter_cache/
+    - ls -la . cas
     - ln -s src cas/src
     - ln -s data cas/data
+    - ls -la cas
     - jupyter-book build cas
     - rm -rf public/pycas
     - cp -r  cas/_build/html public/pycas