alpine + rustup

[mathroc]

Hi,

@Scorpil you mentionned wanting to add alpine variant. have you started working on this ?

If not I'd like to help :)

would it be appropriate to build the alpine image with rustup in the same PR ?

I've looked at the repository quickly, but I want to make sure before starting, tell me if I've misunderstood something:

• the py files in /manage/ are helpers, mainly create.py create the Dockerfiles & build.py build the image from the Dockerfiles and tag them. I probably will have to edit at least build.py
• /templates/ contains the Dockerfile template that are used by create.py, I'll have to add Dockerfile_alpine.mustache (and maybe Dockerfile_alpine_onbuild.mustache)
• docker-tags.yml might need some extra info (for rustup)

anything else ?