request: add Dockerfile support to the template

[blink1073]

Add an option to include a Dockerfile in the the repository.

We can use https://www.docker.com/blog/how-to-dockerize-your-python-applications/ and https://hynek.me/articles/docker-uv/ for inspiration.

[Midnighter]

What are your thoughts on library versus application here? To my mind, the template is more geared towards a library package rather than an application package. Although there are large overlaps, of course. For a library package I don't see a need for a Dockerfile, but for an application it's very handy.

[blink1073]

Hmm, perhaps application features best left as a tutorial, or maybe considered out of scope for pyOpenSci? @lwasser thoughts?