AWS App Runner - Failed to deploy your application image.

Hi, I am trying to create an app runner service using a public image created by me - public.ecr.aws/q2v5z2a5/ecr-tutorial.

Please see below the Dockerfile I used to create the image. This is a very basic nginx. I have some Frontend app code, but that is commented on because I wanted to narrow down the problem.

FROM public.ecr.aws/nginx/nginx:latest

# ARG publish=80:80
# COPY nginx/nginx.conf /etc/nginx/nginx.conf
# COPY nginx/default.conf etc/nginx/conf.d/default.conf

# COPY build /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]

As you see, all the code is commented, except pulling the nginx latest image which is exposing port 80 and running the default nginx command. I even tried just pulling the image and doing nothing and even that is not working.

The same image in local is running using the below command - docker run -p 80:80 public.ecr.aws/q2v5z2a5/ecr-tutorial:latest

Also, If I used the Nginx image instead of my image to create the service, then it works - public.ecr.aws/nginx/nginx:latest

Thanks