Provide a container image

[Morl99]

In order to make the deployment of the trivy-vulnerability-explorer easier for other folks, I would like to provide a container image on withing the ghcr.io registry.

[dirsigler]

I assume this issue is already solved? There is a Dockerfile available in the meantime

[Morl99]

No, not yet. While there is a Dockerfile, I have not come around to build a pipeline to publish the image on the ghcr registry.

[d-koppenhagen]

I think this should also be automated with the release creation.
Also: when creating the images, we could run a trivy scan and link to the report (gh pahed url with query param). That would be a nice double-check to see if everything works as expected. See #526