If I have only a Containerfile in my Git repo I would like to select the Containerfile and not only the Dockerfile at the build trigger creation dialogue:

Github repo: https://github.com/rbo/fedora-toolbox 

I can type "Containerfile" into the dialogue, but can not select via DropDown.

`Containerfile` is not my Personal Idea, it used by podman build too:

• http://docs.podman.io/en/latest/markdown/podman-build.1.html