diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0512bfd58183deeed46d1eef22360c2fa3b0a1cd..80e0cb8f864ff3ea061cd4b365c73c331f49ddf5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,7 +27,9 @@ build-job:       # This job runs in the build stage, which runs first.
   tags:
     - build
   script:
-
+    - echo "Test with command substitution"
+    - FILES=$(ls)
+    - echo $FILES
     - echo "Compiling the code..."
     - echo "Compile complete."
     - |