You can deploy Docker images on Railway, and there's nothing prohibiting RustDesk specifically. However, there are two practical limitations to be aware of: Railway supports HTTP/HTTPS and TCP proxy but does not support UDP, which RustDesk's relay server typically requires on port 21116 for hole punching. Additionally, on the Free plan, all services must run in serverless mode (app sleeping), which would cause the relay server to shut down during periods of inactivity.