With the introduction of node-local network support, docker services can

be attached to special networks such as host and bridge. This fix brings
in the required changes to make sure the stack file accepts these
networks as well.

Signed-off-by: Madhu Venugopal <madhu@docker.com>

cli/compose/convert/service.go

@@ -214,18 +214,21 @@ func convertServiceNetworks(
 		if !ok && networkName != defaultNetwork {
 			return nil, errors.Errorf("undefined network %q", networkName)
 		}
-		var aliases []string
-		if network != nil {
-			aliases = network.Aliases
-		}
 		target := namespace.Scope(networkName)
 		if networkConfig.External.External {
 			target = networkConfig.External.Name
 		}
-		nets = append(nets, swarm.NetworkAttachmentConfig{
-			Target:  target,
-			Aliases: append(aliases, name),
-		})
+		netAttachConfig := swarm.NetworkAttachmentConfig{
+			Target: target,
+		}
+		if container.NetworkMode(target).IsUserDefined() {
+			var aliases []string
+			if network != nil {
+				aliases = network.Aliases
+			}
+			netAttachConfig.Aliases = append(aliases, name)
+		}
+		nets = append(nets, netAttachConfig)
 	}
 
 	sort.Sort(byNetworkTarget(nets))