Fix path in pipeline

.gitlab-ci.yml

@@ -2,7 +2,7 @@ stages:
   - build
   - test
 
-application-image:
+backend-image:
   stage: build
   image:
     name: gcr.io/kaniko-project/executor:debug
@@ -28,6 +28,7 @@ backend-unittests:
       alias: postgres
   image: ${CI_REGISTRY_IMAGE}/backend:${CI_COMMIT_REF_NAME}
   script:
+    - cd backend
     - python3 -m unittest discover
   only:
     changes: