Fix ci yaml errors

.gitlab-ci.yml

@@ -12,29 +12,25 @@ stages:
   - deploy
 
 flake8:
-  stage:
-    - testing
+  stage: testing
   script:
     - python3.6 -m pip install flake8
     - flake8
 
 test:
-  stage:
-    - testing
+  stage: testing
   script:
     - docker build --tag recircle-backend-local:latest .
     - docker run recircle-backend-local:latest pipenv run python manage.py test
 
 build_prod_image:
-  stage:
-    - build
+  stage: build
   script:
     - docker build ./Dockerfile.prod --tag recircle-backend:latest
 
 # deploy needs sshpass installed on gitlab runner machince
 deploy_staging:
-  stage:
-    - deploy
+  stage: deploy
   script: # When the docker registry ready, pull images from it
     - sshpass -p "$STAGING_SSH_PASS" ssh -o StrictHostKeyChecking=no cloud@vm.niif.cloud.bme.hu -p 17668
     - git pull https://git.ik.bme.hu/RECIRCLE/portal.git DEV