Hi @jkarneges many thanks for the quick reply. I tried with wscat and it worked perfectly, so thanks very much for your help. Just one further question, if I may, how can you configure pushpin to run in debug mode in the Docker container? I've tried to pass the debug flag as an argument in the target environment variable but it's not recognised and causes pushpin to disregard the target. It appears that the route file is overridden when running in Docker also.