Purpose?

[CodeMan99]

What exactly is the purpose of this container image? The quickstart example does not really explain this.

# Run as detach
docker run \
    -itd \
    --cap-add NET_ADMIN \
    --name dnsmasq \
    --publish 53:53/udp \
    alvistack/dnsmasq-2.90

So dnsmasq is running on port 53, great. Now what? No network was specified. I can't image this is helpful on the host system. I can't imagine this is helpful to other containers.

What DNS records are expected? Will a DHCP lease be created? If so, how and why?