title: docker-compose does not update resolv.conf
body: <p>I have the following simplified docker-compose file:</p>
  
  <pre>
  version: '2'
  services:
      test.base:
          container_name: test.base
          image: docker.pnet.ch/r-base:latest
          restart: on-failure
          networks:
              - mynet
          dns: 192.168.198.2
          dns_search:
              - pext.ch
              - pnet.ch
  networks:
      mynet:
          driver: bridge
          driver_opts:
              com.docker.network.enable_ipv4: "true"
          ipam:
              driver: default
              config:
                  - subnet: 192.168.198.0/24
                    gateway: 192.168.198.1
  </pre>
  
  <p>With this I expect to have the following entries in the containers /etc/resolv.conf:</p>
  
  <pre>
  search pext.ch pnet.ch
  nameserver 192.168.198.2
  </pre>
  
  <p>But instead I have the following:</p>
  
  <pre>
  search pext.ch pnet.ch
  nameserver 127.0.0.11
  options ndots:0
  </pre>
  
  <p>When I manually start the container using docker run with --dns 192.168.199.2 /etc/resolv.conf contains a nameserver with the given ip address.</p>
  
  <p>Is there anything wrong with my docker-compose file or is it a bug in docker-compose?</p>
  
  <p>I'm using docker version 1.10.3 on RHEL and docker-compose 1.9.0</p>