diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1b80b257921deb38c4999f66441c8c7a1ef7caec..181ca2eeee08ac1988f11854cc96fa50a15a1fd9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,8 +17,21 @@ include:
 
 build:
   stage: build
+  variables:
+    A: (x y z)
+    B[0]: a
+    B[1]: b
+    B[2]: c
   script:
     - set -ex
+    - echo "$A" || :;
+    - echo "${A[@]}" || :;
+    - echo "${#A[@]}" || :;
+    - echo "${!A[@]}" || :;
+    - echo "$B" || :;
+    - echo "${B[@]}" || :;
+    - echo "${#B[@]}" || :;
+    - echo "${!B[@]}" || :;
     - echo "STAMP=$RANDOM" | tee .env
     - cat .env > cache.text
     - cat .env > smash.text