Support usage with docker

[williamfzc]

Docker is a good way to implement cross-platform. It also solved this: #2

What's more, before merging this, you would better to bind this repository to docker hub for auto-updating.

BTW it's a good project :)

[rcfox]

Seems extremely heavy to call it a solution to #2. But it's a good way to work with python versions that aren't offered by your package manager. (I think Ubuntu currently doesn't offer 3.7 without installing from a PPA.)

[williamfzc]

Seems extremely heavy to call it a solution to #2. But it's a good way to work with python versions that aren't offered by your package manager. (I think Ubuntu currently doesn't offer 3.7 without installing from a PPA.)

Yes you are right. This PR just offered a way to use bullet on Windows (Actually, any docker-machine), is not a good-enough solution for everyone. 😄

In my opinion, Docker offered a standard and stable environment for deployment, even you don't need to install Python at all (in some cases, the installation behavior is not allowed on some internal servers)