If you wish to add tests and a Dockerfile, feel free to open a PR. I don't use either and am not going to waste my valuable personal time making them to suit your desires.
Open source developers should not work for free, so they should implement what they personally are enriched by doing, and let you do what you wish to do, or pay them to do what you wish done.
depending on the type of project, it can certainly be very helpful to have a link to a working demo. But presumably having a dockerfile wouldn't be worth the hassle if it were automatically possible for docker to use the config environment specified for CI and run the latest release?