Change binary output dir for CI

We can't upload artifacts outside of the source dir so change the CI
build dir to build-ci/

.gitlab-ci.yml

@@ -26,11 +26,11 @@ build-job:       # This job runs in the build stage, which runs first.
   image: $CI_REGISTRY/daphne4nfdi/sassena:latest
   script:
     - cmake --preset=ci .
-    - cd /builds/DAPHNE4NFDI/build
+    - cd build-ci
     - ninja -j2
   artifacts:
     paths:
-      - "/builds/DAPHNE4NFDI/build"
+      - "build-ci"
 
 unit-test-job:   # This job runs in the test stage.
   stage: test    # It only starts when the job in the build stage completes successfully.
@@ -38,7 +38,7 @@ unit-test-job:   # This job runs in the test stage.
   dependencies:
     - build-job
   script:
-    - cd /builds/DAPHNE4NFDI/build
+    - cd build-ci
     - ninja test
 
 lint-test-job:   # This job also runs in the test stage.

CMakePresets.json

@@ -23,7 +23,7 @@
         {
             "name": "ci",
             "generator": "Ninja",
-            "binaryDir": "${sourceDir}/../build",
+            "binaryDir": "${sourceDir}/build-${presetName}",
             "cacheVariables": {
                 "CMAKE_BUILD_TYPE": "RelWithDebInfo",
                 "USE_DEVELOPER_MODE": "ON",