Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -6,10 +6,9 @@ build:
   stage: build
   variables:
       GIT_SUBMODULE_STRATEGY: recursive
-  before_script:
+  script:
     - module add foss
     - module add Anaconda3
-  script:
     - mkdir build
     - cd build
     - cmake ..