diff --git a/adminer.subfolder.conf b/adminer.subfolder.conf.sample
similarity index 78%
rename from adminer.subfolder.conf
rename to adminer.subfolder.conf.sample
index f2b0bb2..73450f4 100644
--- a/adminer.subfolder.conf
+++ b/adminer.subfolder.conf.sample
@@ -1,7 +1,7 @@
-# adminer does not require a base url setting
+# adminer does not require a base url setting, but the container needs to be named adminer
 
 location /adminer {
-    return 301 $scheme://$http_host/adminer/;
+    return 301 $scheme://$host/adminer/;
 }
 location ^~ /adminer/ {
     # enable the next two lines for http auth