Only tools have kubernetes credentials. If a normal user tries to execute any command, they are currently shown an error:
taavi@tools-sgebastion-11:~ $ toolforge-jobs containers [toolforge-jobs] ERROR: unable to fetch information. Contact a Toolforge admin: "Exception: couldn't read kubeconfig for user 'taavi': [Errno 2] No such file or directory: '/data/project/taavi/.kube/config'"
It should display a more helpful message instead.