Dear @yadhunandhana,
thanks for reaching out!
I think the reason might be that the Docker image is not compatible with the Docker registry.
Could you have a look here and look if this resolves the problem: https://www.tira.io/t/ensure-to-upload-compatible-docker-images/4488/1
If it does not resolve the problem, could you then please invite me (my account is mam10eks) to your github repository with your code, I would then have a look there and help to submit it.
Thanks in advance and best regards,
Maik