Change default Dockerfile port from 80/25

[djfarrelly]

Purpose

I think it would better for Docker container security to not run the main command on a port under 1000.

Idea

Change the Dockerfile to run on 1080 / 1025 instead of 80 / 25. The challenge is that this could break people's usage when upgrading so we'd have to think about this one or save it for a 2.x breaking changes release.

[bearcodi]

Hi @djfarrelly I've created a pull request for this, I kept getting errors when using the docker image on Mac when I was trying to bind to port 25

The pull request sets the default ports for web and smtp to 1080 and 1024 respectively.

Thanks for the cool project! Its in my dev/test toolkit by default!