change server listening address to global

[lcx]

listen to 0.0.0.0 instead of just local interface so it can work in Docker (and herby in devcontainers) refs #340 Credits go to @robzolkos

[robzolkos]

Im concerned this will affect non devcontainer users. Will need to be checked by someone who runs the app on metal.

[jespr]

This works fine for me running it locally on my Macbook Pro (non-docker)

[lcx]

I indeed haven't started it without devcontainer, was already midnight when I made the PR. But listening on 0.0.0.0 still allows you to connect via 127.0.0.1 should be no issue that's why I pushed without testing without devcontainer.