Update README.md

examples/readeck/README.md

@@ -1,3 +1,21 @@
 # References
 
 - https://codeberg.org/readeck/readeck
+- https://readeck.org/en/docs/deploy#setup-a-reverse-proxy
+
+# Notes
+
+If you're using readeck as a container behind a reverse proxy, you must set the environment variable `READECK_USE_X_FORWARDED=1`. 
+
+Furthermore, you must adjust the `allowed_hosts` directive the Readeck config at `/etc/readeck/config.toml`:
+
+````
+[server]
+host = "0.0.0.0"
+port = 8000
+allowed_hosts = ["readeck.example.com"]
+use_x_forwarded_for = true
+use_x_forwarded_host = true
+use_x_forwarded_proto = true
+````
+