Readme: Add hint for interfering ports on Synology Closes Akkudoktor-…

…EOS#408

README.md

@@ -52,6 +52,8 @@ Windows:
 docker compose up
 ```
 
+If you are running the EOS container on a system hosting multiple services, such as a Synology NAS, and want to allow external network access to EOS, please ensure that the default exported ports (8503, 8504) are available on the host. On Synology systems, these ports might already be in use (refer to [this guide](https://kb.synology.com/en-me/DSM/tutorial/What_network_ports_are_used_by_Synology_services)). If the ports are occupied, you will need to reconfigure the exported ports accordingly.
+
 ## Configuration
 
 This project uses the `EOS.config.json` file to manage configuration settings.