Update container url

Author: jeroen

README.md

@@ -28,7 +28,7 @@ The server `ws.opencpu.org` is running exactly the same service from this contai
 On your local machine start the proxy server with:
 
 ```sh
-docker run -it -p7777:7777 ghcr.io/jeroen/webr-proxy
+docker run -it -p7777:7777 ghcr.io/r-wasm/ws-proxy
 ```
 
 Now open the WebR test app on https://webr.r-wasm.org/proxy-websockets/ run this code to test: