The single-worker serve path honored --host, but run_multi_worker_serve
hardcoded the load balancer to 127.0.0.1. With --host 0.0.0.0 and
--workers >1 (the common Docker setup) the balancer bound loopback only,
so the mapped port was refused from outside the container. Bind the
balancer to the requested host. Workers stay on loopback and are reached
only by the balancer.
Fixes#336.
SGavrl
9837262af8