Refactor CI pipeline by removing the build stage and adjusting test job dependencies

.gitlab-ci.yml

@@ -20,7 +20,6 @@ image: git.gfz-potsdam.de:5000/naaice/poet:ci
 
 stages:          # List of stages for jobs, and their order of execution
   - release
-  - build
   - test
 
 variables:
@@ -28,26 +27,11 @@ variables:
   SOURCE_ARCHIVE_NAME: 'poet_${CI_COMMIT_TAG}_sources.tar.gz'
   CHANGELOG_FILE: 'commit_changelog.md'
 
-build-poet:       # This job runs in the build stage, which runs first.
-  stage: build
+test:       # This job runs in the build stage, which runs first.
+  stage: test
   script:
     - mkdir -p build && cd build
-    - cmake -DPOET_ENABLE_TESTING=ON -DPOET_PREPROCESS_BENCHS=OFF ..
-    - make -j$(nproc)
-  cache: 
-    key: build-$CI_COMMIT_BRANCH
-    paths:
-      - build  
-  artifacts:
-    paths:
-      - build
-
-test-poet:
-  stage: test
-  dependencies:
-    - build-poet
-  script:
-    - cd build
+    - cmake -DPOET_ENABLE_TESTING=ON -DPOET_PREPROCESS_BENCHS=OFF -DCMAKE_BUILD_TYPE=Release ..
     - make -j$(nproc) check
 
 pages: