#!/bin/bash

test $# -ne 1 && echo "must specify the name of a container" && exit 1

IP=$(docker inspect --format '{{.NetworkSettings.IPAddress}}' $1)

if [ "$IP x" == " x" ]; then
  IP=$(docker inspect --format '{{.NetworkSettings.Networks.maas_default.IPAddress}}' $1)
fi

/bin/echo -ne $IP