Add example docker compose; fix dynamic reg

backend/dev_nginx.conf

@@ -40,6 +40,23 @@ server {
 
 }
 
+# Matrix Authentication Server reverse proxy
+server {
+    listen                  443 ssl;
+    listen                  [::]:443 ssl;
+    server_name             mas.m.localhost;
+    ssl_certificate         /root/ssl/cert.pem;
+    ssl_certificate_key     /root/ssl/key.pem;
+
+    location / {
+        proxy_pass "http://mas:8080";
+        proxy_http_version 1.1;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    }
+
+    error_page   500 502 503 504  /50x.html;
+}
+
 # MatrixRTC reverse proxy
 # - MatrixRTC Authorization Service
 # - LiveKit SFU websocket signaling connection