Add back before_script

.gitlab-ci.yml

 variables:
   GIT_SUBMODULE_STRATEGY: recursive
 
+before_script:
+  - module load singularity/3.5.3
+  - module load awscli/1.19.17
+
 stages:
   - build_stage
   - test_stage
@@ -11,7 +15,7 @@ TEST:
   script:
     - pwd
     - hostname
-    - module load singularity/3.5.3
+    - module list
     - module avail awscli
 
 build.dev: