update dockerfiles, clean up

unmaintained/nginx/proxy_params

@@ -0,0 +1,6 @@
+proxy_set_header        Host                 $host;
+proxy_set_header        X-Real-IP            $remote_addr;
+proxy_set_header        X-Forwarded-For      $proxy_add_x_forwarded_for;
+proxy_set_header        X-Remote-Port        $remote_port;
+proxy_set_header        X-Forwarded-Proto    $scheme;
+proxy_redirect          off;