Custom app not working in kubernetes deployment of Frappe

I wanted to add a custom app in my Frappe app deployed on Kubernetes. I used this repo of @revant_one GitHub - castlecraft/custom_frappe_docker.
The image got successfully built. However when I am adding that in my values.yaml file and running the helm install command, my nginx and worker pods stay in CrashLoopBackOff state…
Kubectl describe gives the following output.
Successfully pulled image
Created container nginx
Started container nginx
Back-off restarting failed container

What can be the issue? Pods other than those built on my custom image are running fine.