Run automated tests on the CI

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>

debian/apertis/local-gitlab-ci.yml

+test:
+  stage: test
+  image: $DOCKER_IMAGE
+  tags:
+    - lightweight
+  script:
+    - apt build-dep -y .
+    - make check
+  needs:
+    - pipeline: $PARENT_PIPELINE_ID
+      job: prepare-build-env
+      artifacts: true