Use docker image

.gitlab-ci.yml

@@ -37,11 +37,11 @@ build-job:       # This job runs in the build stage, which runs first.
 
 unittests: 
   stage: test
-  before_script:
-    - module load spack
-    - module load cmake
-    - module load boost
-    - module load casacore
+  image: "$CI_REGISTRY_IMAGE:latest"
+  script:
+    - cmake -B build . -DCMAKE_BUILD_TYPE=Release
+    - make -C build
+    - build/microbenchmarks --benchmark_out=results-generic.json --benchmark_out_format=json
   script:
     - cmake -B build .
     - make -C build