hyper jupyter stop not working

[bbriggs]

Description

hyper jupyter stop panics and fails to stop the notebook container

Steps to Reproduce

➜  hyper git:(stable) ✗ hyper jupyter
Jupyter Lab Now Running via Docker Container a7418ff255 on port 49154
➜  hyper git:(stable) ✗ hyper jupyter stop
panic: runtime error: index out of range [0] with length 0

goroutine 1 [running]:
github.com/gohypergiant/hyperdrive/hyper/services/notebook.LocalNotebookService.Stop({{0x7c3b50?, 0xc0000d3600?}}, {0x0, 0x0})
        /home/fraq/go/pkg/mod/github.com/gohypergiant/hyperdrive/[email protected]/services/notebook/local.go:165 +0x23d
github.com/gohypergiant/hyperdrive/hyper/cmd.glob..func8(0xe5d5e0?, {0xa1010d?, 0x0?, 0x0?})
        /home/fraq/go/pkg/mod/github.com/gohypergiant/hyperdrive/[email protected]/cmd/jupyter.go:54 +0x4f
github.com/spf13/cobra.(*Command).execute(0xe5d5e0, {0xe99d40, 0x0, 0x0})
        /home/fraq/go/pkg/mod/github.com/spf13/[email protected]/command.go:860 +0x663
github.com/spf13/cobra.(*Command).ExecuteC(0xe5d860)
        /home/fraq/go/pkg/mod/github.com/spf13/[email protected]/command.go:974 +0x3b4
github.com/spf13/cobra.(*Command).Execute(...)
        /home/fraq/go/pkg/mod/github.com/spf13/[email protected]/command.go:902
github.com/gohypergiant/hyperdrive/hyper/cmd.Execute()
        /home/fraq/go/pkg/mod/github.com/gohypergiant/hyperdrive/[email protected]/cmd/root.go:41 +0x25
main.main()
        /home/fraq/go/pkg/mod/github.com/gohypergiant/hyperdrive/[email protected]/main.go:21 +0x17