add CI task for tests

.gitlab-ci.yml

 stages:
   - prepare
   - build
+  - test
 
 docker:
   stage: prepare
@@ -15,4 +16,12 @@ build:
     - make -C Source
   image: dpsim-dev
   tags:
-    - docker
\ No newline at end of file
+    - docker
+
+test:
+  stage: test
+  script:
+    - make -C Source test
+    - cd Source/Tests
+    - python run_tests.py
+  image: dpsim-dev

Dockerfile

@@ -5,5 +5,6 @@ RUN dnf -y install \
 	gcc-c++ \
 	make \
 	eigen3-devel \
-	doxygen
-	
\ No newline at end of file
+	doxygen \
+	numpy \
+	python-pandas