Not able to set kernel name for notebook

[andreytaboola]

Hi,
I am trying to use my default JupyterLab kernel for executing notebooks via Notebooker but I don't think this configuration is applied. I've tried following commands

notebooker-cli --notebook-kernel-name=python3
notebooker-cli --notebook-kernel-name python3

Opening the Notebooker output for the executing notebook I see following kernelspec:
"kernelspec": { "display_name": "notebooker_kernel", "language": "python", "name": "notebooker_kernel" }

but I expect it to be
"kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }

[andreytaboola]

Find a solution for docker:
ENV NOTEBOOK_KERNEL_NAME=python3