Use dev target for tests

Signed-off-by: Federico Busetti <729029+febus982@users.noreply.github.com>

Author: febus982

.gitlab_ci/build.yml

@@ -3,6 +3,7 @@ build-test:
   stage: build
   variables:
     DOCKER_IMAGE_NAME: $CI_PROJECT_NAME-test
+    DOCKER_TARGET: dev
   rules:
     # We run the pipeline only on merge requests or the `main` branch
     - if: $CI_COMMIT_REF_NAME == $CI_DEFAULT_BRANCH