fix: remove duplicate auth module headers

root/defaults/nginx/tinyauth-proxy.conf.sample

@@ -0,0 +1,39 @@
+## Version 2023/02/09 - Changelog: https://github.com/linuxserver/docker-swag/commits/master/root/defaults/nginx/proxy.conf.sample
+
+# Timeout if the real server is dead
+proxy_next_upstream error timeout invalid_header http_500 http_502 http_503;
+
+# Proxy Connection Settings
+proxy_buffers 32 4k;
+proxy_connect_timeout 240;
+proxy_headers_hash_bucket_size 128;
+proxy_headers_hash_max_size 1024;
+proxy_http_version 1.1;
+proxy_read_timeout 240;
+proxy_redirect http:// $scheme://;
+proxy_send_timeout 240;
+
+# Proxy Cache and Cookie Settings
+proxy_cache_bypass $cookie_session;
+#proxy_cookie_path / "/; Secure"; # enable at your own risk, may break certain apps
+proxy_no_cache $cookie_session;
+
+# Proxy Header Settings
+proxy_set_header Connection $connection_upgrade;
+proxy_set_header Early-Data $ssl_early_data;
+proxy_set_header Host $host;
+proxy_set_header Proxy "";
+proxy_set_header Upgrade $http_upgrade;
+proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+# Tinyauth doesn't want both the x-forwarded-host/x-forwarded-uri headers and the x-original-url header,
+# so we clear them out here
+proxy_set_header X-Forwarded-Host "";
+proxy_set_header X-Forwarded-Uri "";
+proxy_set_header X-Forwarded-Method $request_method;
+proxy_set_header X-Forwarded-Port $server_port;
+proxy_set_header X-Forwarded-Proto $scheme;
+proxy_set_header X-Forwarded-Server $host;
+proxy_set_header X-Forwarded-Ssl on;
+proxy_set_header X-Original-Method $request_method;
+proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
+proxy_set_header X-Real-IP $remote_addr;

root/defaults/nginx/tinyauth-server.conf.sample

@@ -6,12 +6,8 @@
 location /tinyauth {
     internal;
 
-    include /config/nginx/proxy.conf;
+    include /config/nginx/tinyauth-proxy.conf;
     include /config/nginx/resolver.conf;
     set $upstream_tinyauth tinyauth;
     proxy_pass http://$upstream_tinyauth:3000/api/auth/nginx;
-
-    proxy_set_header x-forwarded-proto $scheme;
-    proxy_set_header x-forwarded-host $http_host;
-    proxy_set_header x-forwarded-uri $request_uri;
 }