backend continous integration tests

.gitignore

 annotation/minerva-big/
+builds/
 debian/src/
 debian/minerva*
 debian/src/*.sql

.gitlab-ci.yml

@@ -12,6 +12,20 @@ test_frontend:
     - npm install  
     - npm test
 
+test_backend:
+  variables:
+    POSTGRES_DB: map_viewer
+    POSTGRES_USER: map_viewer
+    POSTGRES_PASSWORD: 123qweasdzxc
+  image: debian
+  services:
+    - postgres:latest
+  stage: test
+  script:
+    - sudo apt-get update
+    - sudo apt-get install -y openjdk-8-jdk maven
+    - mvn test
+
 build_war:
   image: debian
   stage: build