Fix multi-interface port binding.

cloud/docker/docker_container.py

@@ -1410,7 +1410,7 @@ class Container(DockerBaseClass):
         return entrypoint
 
     def _get_expected_ports(self):
-        if self.parameters.published_ports is None:
+        if not self.parameters.published_ports:
             return None
         expected_bound_ports = {}
         for container_port, config in self.parameters.published_ports.iteritems():
@@ -1420,7 +1420,7 @@ class Container(DockerBaseClass):
                 expected_bound_ports[container_port] = [{'HostIp': "0.0.0.0", 'HostPort': ""}]
             elif isinstance(config[0], tuple):
                 expected_bound_ports[container_port] = []
-                for host_ip, host_port in config.iteritems():
+                for host_ip, host_port in config:
                     expected_bound_ports[container_port].append({ 'HostIp': host_ip, 'HostPort': str(host_port)})
             else:
                 expected_bound_ports[container_port] = [{'HostIp': config[0], 'HostPort': str(config[1])}]