GCS IAM Permissions
Give bucket reader; folder reader (legacy bucket reader + condition - starts with bucket/object/prefix); object reader (legacy object reader + condition)
Note: The default ITS GitLab runner is a shared resource and is subject to slowdowns during heavy usage.
You can run your own GitLab runner that is dedicated just to your group if you need to avoid processing delays.
Give bucket reader; folder reader (legacy bucket reader + condition - starts with bucket/object/prefix); object reader (legacy object reader + condition)