Update .gitlab-ci.yml file to run on gitlab.uzh.ch

.gitlab-ci.yml

@@ -14,7 +14,7 @@ image_build:
   before_script:
     - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN http://$CI_REGISTRY
   script: |
-    docker build --no-cache --tag $CI_REGISTRY_IMAGE:latest .
+    docker build --tag $CI_REGISTRY_IMAGE:latest .
     docker push $CI_REGISTRY_IMAGE:latest
 
   #CI_COMMIT_SHA_7=$(echo $CI_COMMIT_SHA | cut -c1-7)