added basic docker 1.9 networking support

GLOCKFILE

@@ -1,4 +1,4 @@
 github.com/BurntSushi/toml f87ce853111478914f0bcffa34d43a93643e6eda
 github.com/Sirupsen/logrus 6ebb4e7b3c24b9fef150d7693e728cb1ebadf1f5
 github.com/docker/docker 2606a2e4d3bf810ec82e373a6cd334e22e504e83
-github.com/fsouza/go-dockerclient 1399676f53e6ccf46e0bf00751b21bed329bc60e
+github.com/fsouza/go-dockerclient d750ee8aff39bca4ccf0b362db4f04510145d678

docker-gen.go

@@ -45,6 +45,13 @@ type Event struct {
 	Image       string `json:"from"`
 }
 
+type Network struct {
+	Name		 string
+	IP           string
+	IP6LinkLocal string
+	IP6Global    string
+}
+
 type Address struct {
 	IP           string
 	IP6LinkLocal string
@@ -64,6 +71,7 @@ type Volume struct {
 type RuntimeContainer struct {
 	ID           string
 	Addresses    []Address
+	Networks     []Network
 	Gateway      string
 	Name         string
 	Hostname     string

docker_client.go

@@ -124,6 +124,7 @@ func getContainers(client *docker.Client) ([]*RuntimeContainer, error) {
 			Hostname:     container.Config.Hostname,
 			Gateway:      container.NetworkSettings.Gateway,
 			Addresses:    []Address{},
+			Networks:     []Network{},
 			Env:          make(map[string]string),
 			Volumes:      make(map[string]Volume),
 			Node:         SwarmNode{},
@@ -155,6 +156,16 @@ func getContainers(client *docker.Client) ([]*RuntimeContainer, error) {
 				ReadWrite: container.VolumesRW[k],
 			}
 		}
+		for k,v := range container.NetworkSettings.Networks {
+			fmt.Printf("", k)
+			network := Network{
+				Name: k,
+				IP: v.IPAddress,
+			}
+			runtimeContainer.Networks = append(runtimeContainer.Networks,
+				network)
+		}
+
 		if container.Node != nil {
 			runtimeContainer.Node.ID = container.Node.ID
 			runtimeContainer.Node.Name = container.Node.Name

templates/nginx.tmpl

@@ -19,6 +19,15 @@ upstream {{ $host }} {
 		   server {{ $address.IP }}:{{ $address.Port }};
 		{{ end }}
 
+	{{/* If a VIRTUAL_NETWORK is specified use use its IP */}}
+	{{ else if $value.Env.VIRTUAL_NETWORK }}
+		{{ range $i, $network := $value.Networks }}
+		   {{ if eq $network.Name $value.Env.VIRTUAL_NETWORK }}
+		   # Network: {{$network.Name}}
+		   server {{ $network.IP }}:{{ $value.Env.VIRTUAL_PORT }};
+		   {{ end }}
+		{{ end }}
+
 	{{/* If more than one port exposed, use the one matching VIRTUAL_PORT env var */}}
 	{{ else if $value.Env.VIRTUAL_PORT }}
 		{{ range $i, $address := $value.Addresses }}