Set bindHost to 0.0.0.0 if is docker and bind is config default

[dskvr]

Small change that can save people time.

For example, #53

untested PR fueled by catharsis

Probably needs a more complete implementation to detect different containers and act appropriately, for example while docker detection is /.dockerenv, podman detection is /run/.containerenv.

Also, should probably just throw a warning instead of overriding the config.