Docker support

[kiler129]

Hi,

Did you consider providing containerized version of the utility, so that it can be executed in isolated environments? If this is something you're open to, I can put together a PR with Dockerfile and entrypoint.

[joanbm]

Hi, there's currently no containerized version of this utility, but feel free to open a PR providing a Dockerfile.

PS: I should also be able to set up automatic image builds on Docker Hub when that's done, if that's interesting for you.