Docker changie development image to help to contribute

[miniscruff]

Discussed in #400

^{Originally posted by llaville November 9, 2022}
Hello,

A docker image of changie with all tools (go, hugo, ...) pre-installed will be very helpfull to help to contribute.

I was in trouble to install on my plaform hugo-extended due to comment https://gohugo.io/getting-started/installing#debian-and-ubuntu, because I've Ubuntu 18..04 LTS

Plan

1. Create a dev.Dockerfile in the root of the repo
2. Add to the contributing guide how to use this new file
3. Ideally dependabot would keep this file up to date, will see.

[miniscruff]

Closing in favor of a discussion answer as supporting a dev dockerfile is outside the scope of development. I would not use it and keeping it up to date and tested would be extra work. See #400 (comment) for an example.