DNSMASQ listen on other interfaces

Dnsmasq does not provide a D-Bus API for binding to an interface. It only allows doing that from configuration or command line. Since the configuration is not available to be modified from a container, the only option is to start dnsmasq in the container. Here is one example I found through a GitHub search: https://github.com/FlowLeaf/edge-grow-pi/tree/master/dnsmasq.