docky init simplification

[sebastienbeau]

Hi

I would like to simplify docky init. It should only generate the ".env" file and nothing more.

As docky can be use by whatever project (I use for node and ruby). I prefers to keep it simple as possible.

If we want to generate a new project I prefer to use directly copier (we do not create a lot of projet). And copier is not something hard to use and it also good to know how to use it, as sometime you need to launch a copy update on existing OCA Repo

@bealdav @PierrickBrun @hparfr

This will solve the publication of docky on pipy and also unblock the docky-template