pinned GitLab container version

gitlab/bootstrap/setup.sh

@@ -27,7 +27,7 @@ else
   --volume /srv/gitlab/logs:/var/log/gitlab \
   --volume /srv/gitlab/data:/var/opt/gitlab \
   --shm-size 256m \
-  gitlab/gitlab-ee:latest
+  gitlab/gitlab-ee:15.5.6-ee.0
 
   # updates file permissions to avoid git and server errors
   docker exec -it gitlab update-permissions &> /dev/null
@@ -39,4 +39,4 @@ until $(curl --output /dev/null --silent --head --fail http://localhost); do
   sleep 5
 done
 
-echo -e '\nGitLab is up and running! \U1F680'
+echo -e '\nGitLab is up and running! \U1F680'