fixing git push

.gitlab-ci.yml

@@ -29,6 +29,10 @@ build-release: #This will be executed if you push on master, it makes a new rele
   script:
     - export version=`cat VERSION`
     - echo "building branch $CI_COMMIT_REF_NAME, Version $version"
+    - git config --global user.name "build"
+    - git config --global user.email "noreply@jonasled.de"
+    - git tag -a $version -m "$version" #add a tag with the current version
+    - git push --tags -o ci.skip #Push the tag to the repo ci.skip means don't build the image again.
     - sudo docker image prune -f #Delete old unused images
     - sudo docker pull python:3
     - sudo docker build -t gitlab.jonasled.de/jonasled/url_shorter_docker . #Build the image with the name already set to push