Nginx as docker proxy with maps

Trying to use docker to set up a suite of applications behind a proxy using the nginx maps option to simplify configuration with a lot of backend applications.

The problem I am facing is this container will not resolve the addresses I gave it with links.

I tried using dnsmasq but it was troublesome and didn't give me a working permission.

Any suggestions? nginx.conf:

events {
    worker_connections  1024;
}

http {
  map $hostname $destination {
    hostnames;
      default host1:81;
      host1.test.local host1:81;
      host2.test.local host2:82;
      host3.test.local host3:83;
   }
   server {
     location / {
       proxy_pass http://$destination/;
     }
   }
}

      

        
        
        
      

    

docker-compose.yml:

webproxy:
  build: nginx:latest
  ports:
    - "80:80"
  volumes:
    - nginx.conf:/etc/nginx/nginx.conf
  links:
    - "host1:host1"
    - "host2:host2"
    - "host3:host3"

host1:
  image: nginx:latest
  ports:
    - "81:80"
  volumes:
    - host1/index.html:/usr/share/nginx/html/index.html

host2:
  image: nginx:latest
  ports:
    - "82:80"
  volumes:
    - host2/index.html:/usr/share/nginx/html/index.html

host3:
  image: nginx:latest
  ports:
    - "83:80"
  volumes:
    - host3/index.html:/usr/share/nginx/html/index.html

      

        
        
        
      

    

The error I keep getting:

webproxy_1 | 2015/07/14 16:44:11 [error] 5#0: *1 no resolver defined to resolve host1, client: 10.0.2.2, server: , request: "GET / HTTP/1.1", host: "host2.test.local:8281"
webproxy_1 | 10.0.2.2 - - [14/Jul/2015:16:44:11 +0000] "GET / HTTP/1.1" 502 181 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:39.0) Gecko/20100101 Firefox/39.0"