From 1030f773f97eb25188a0250296997767c156aec2 Mon Sep 17 00:00:00 2001
From: Julien PILLON <jpillon@lesalternatives.org>
Date: Mon, 14 Sep 2020 20:23:12 +0200
Subject: [PATCH] Add the possibility to define the VIRTUAL_HOST_VARNAME in
 order to be able to create multiple nginx-proxy instances.

---
 nginx.tmpl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/nginx.tmpl b/nginx.tmpl
index 07e2b50..4125cbe 100644
--- a/nginx.tmpl
+++ b/nginx.tmpl
@@ -168,7 +168,10 @@ server {
 }
 {{ end }}
 
-{{ range $host, $containers := groupByMulti $ "Env.VIRTUAL_HOST" "," }}
+{{/* Get the VIRTUAL_HOST_VARNAME for filtering */}}
+{{ $virtual_host_varname := (or ($.Env.VIRTUAL_HOST_VARNAME) "VIRTUAL_HOST") }}
+
+{{ range $host, $containers := groupByMulti $ (print "Env." $virtual_host_varname) "," }}
 
 {{ $host := trim $host }}
 {{ $is_regexp := hasPrefix "~" $host }}