Move away from Alpine base image

[pathofleastresistor]

The newest version of Jekyll Sass Converter uses sass-embedded for stylesheets, and it seems like that just isn't available on Alpine Linux (see e.g. sass/dart-sass-embedded#85, sass/dart-sass-embedded#106).

[ffes]

I had to downgrade to Jekyll 4.2 (and work around #335 again) because I can't deploy my websites anymore.

The docker image is broken. Jekyll 4.2 doesn't work out of the box because of #335 and 4.3 doesn't work because of this sass-embedded problem.

[mattpopovich]

If you're looking for a non-stale docker image for jekyll development, I've since switched to https://github.com/BretFisher/jekyll-serve, which is more up to date and is built on Debian.

[JV-conseil]

Similar Issue #363

[JV-conseil]

Hi 👋

While waiting for @envygeeks to update this repo, I've pushed to Docker Hub an updated version for jekyll/builder image:
https://hub.docker.com/r/jvconseil/jekyll-docker

See also PR #369

Best,
@JV-conseil