diff --git a/nginx.tmpl b/nginx.tmpl
index 2e1415e..e6423ce 100644
--- a/nginx.tmpl
+++ b/nginx.tmpl
@@ -1,5 +1,31 @@
 {{ $CurrentContainer := where $ "ID" .Docker.CurrentContainerID | first }}
 
+{{ define "upstream" }}
+	{{ $rancherIP := or (index .Container.Labels "io.rancher.container.ip") "" }}
+	{{ if .Address }}
+		{{/* If we got the containers from swarm and this container's port is published to host, use host IP:PORT */}}
+		{{ if and .Container.Node.ID .Address.HostPort }}
+			# {{ .Container.Node.Name }}/{{ .Container.Name }}
+			server {{ .Container.Node.Address.IP }}:{{ .Address.HostPort }};
+		{{/* If there is no swarm node or the port is not published on host, use container's IP:PORT */}}
+		{{ else if .Network }}
+			# {{ .Container.Name }}
+			server {{ .Network.IP }}:{{ .Address.Port }};
+		{{ end }}
+	{{ else if $rancherIP }}
+		# rancher: {{ index .Container.Labels "io.rancher.container.name" }} {{ printf "%s" $rancherIP }}
+		{{ $port := coalesce .Container.Env.VIRTUAL_PORT "80" }}
+		server {{ printf "%s" (index (splitN $rancherIP "/" 2) 0) }}:{{ printf "%s" $port }};
+	{{ else if .Network }}
+		# {{ .Container.Name }}
+		{{ if .Network.IP }}
+			server {{ .Network.IP }} down;
+		{{ else }}
+			server 127.0.0.1 down;
+		{{ end }}
+	{{ end }}
+
+{{ end }}
 {{ $external_http_port := coalesce $.Env.HTTP_PORT "80" }}
 {{ $external_https_port := coalesce $.Env.HTTPS_PORT "443" }}
 {{ $debug_all := $.Env.DEBUG }}