HPC cluster based on singularity image for Jupyter kernel

Hi, I am trying to deploy a singularity image to run cells on a Jupyter notebook within a HPC cluster, I was following this tutorial https://notebook.community/zebulasampedro/singularity-jupyter-demo/managing-custom-jupyter-envs-with-singularity, however I have been unable to configure the kernel.json correctly to load the image so that it can execute the image on one of the nodes. Thanks for any advices!