Docker support

[Kastet]

Solves https://github.com/yonaskolb/SwagGen/issues/160

Changes:

• adds Dockerfile
• updates README with instructions to use a pre-built image

[mithun]

• Can the Dockerfile be split into multiple stages so that the published image does not necessarily contain the sources and build directory?
• Ideally, the docker image should be published to a Docker Hub repository owned by @yonaskolb. Otherwise, users may not trust it

I have an example of a multi-stage Dockerfile here: https://github.com/mithun/swaggen-docker/blob/master/Dockerfile

[Kastet]

Thanks for this example @mithun, good suggestion!

[mackoj]

@mithun Can your https://github.com/mithun/swaggen-docker take all the same parameter as the official binary ?

[mithun]

@mithun Can your https://github.com/mithun/swaggen-docker take all the same parameter as the official binary ?

Yes