fixed version variable

.gitlab-ci.yml

@@ -27,7 +27,7 @@ build-release: #This will be executed if you push on master, it makes a new rele
   only:
     - master
   script:
-    - export version='cat VERSION'
+    - export version=`cat VERSION`
     - echo "building branch $CI_COMMIT_REF_NAME, Version $version"
     - 'curl -X POSRT --silent --show-error --fail --header "PRIVATE-TOKEN: ${GITLAB_TOKEN}"https://gitlab.jonasled.de/api/v4/projects/${CI_PROJECT_ID}/repository/tags?tag_name=$version&ref=${CI_COMMIT_SHS}' #Tag the current commit with the version.
     - sudo docker image prune -f #Delete old unused images