Forward the x forwarded proto to the app

docker/nginx.conf

@@ -23,6 +23,11 @@ http {
 	gzip on;
 	gzip_disable "msie6";
 
+	map $http_x_forwarded_proto $proxy_x_forwarded_proto {
+		default $http_x_forwarded_proto;
+		''      $scheme;
+	}
+
   server {
     listen 80;
 
@@ -45,10 +50,10 @@ http {
     location / {
       proxy_pass         http://127.0.0.1:8000/;
 
-      proxy_set_header Host $http_host;
-      proxy_set_header X-Real-IP $remote_addr;
-      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-      proxy_set_header X-Forwarded-Proto $scheme;
+			proxy_set_header Host $http_host;
+			proxy_set_header X-Real-IP $remote_addr;
+			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+			proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
     }
   }
 }