Create an icon for docker image

I create docker image of my application (songkong/songkong) but I notice it doesnt have an icon whereas many other docker images do, how do I add an icon to the docker image ?

(my docker image is available on docker hub)

Can I use Docker logo?

Use of Logos The Docker's registered, unregistered and pending logos, including the Docker “Moby Dock” whale logo, as well as other design elements such as characters and container images, may be taken only from Docker's product sheet or from Docker's service screen shot following authorization from us.

Not all official images have an associated icon. For instance, adoptopenjdk.

An image like logstash would use a logo.png in the docker-library/docs repository.

docker-library/docs issue 1060 asked: How do you add the icon for an image on Docker Hub?

But... there does not seem to be any formal process associated to that.
Only to become an official image.