From b61c84192960d937a5e5b517264efe9653f8f899 Mon Sep 17 00:00:00 2001
From: Harald Wellmann <harald.wellmann@sabio.de>
Date: Thu, 22 Mar 2018 10:56:41 +0100
Subject: [PATCH] do not create an empty upstream entry for a container from an
 invisible Docker network

---
 nginx.tmpl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/nginx.tmpl b/nginx.tmpl
index 6bf19d5..1d1d4b6 100644
--- a/nginx.tmpl
+++ b/nginx.tmpl
@@ -142,6 +142,9 @@ upstream {{ $upstream_name }} {
 					{{ $address := where $container.Addresses "Port" $port | first }}
 					{{ template "upstream" (dict "Container" $container "Address" $address "Network" $containerNetwork) }}
 				{{ end }}
+			{{ else }}
+				# Cannot connect to network of this container
+				server 127.0.0.1 down;
 			{{ end }}
 		{{ end }}
 	{{ end }}