Push images to official docker repository

Now that the functionality has been tested on the test repo, enable it on the main repo and disable our jenkins job.

.github/workflows/docker.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Publish to registry
         uses: elgohr/Publish-Docker-Github-Action@master
         with:
-          name: openproject/community-test
+          name: openproject/community
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
           tag_semver: true