Please use the simple-chat-app-example instead!
This example uses the github.com/geckosio/simple-chat-app-example.
Link:
The server runs on port 3000/tcp.
The UPD connections will be on a random UDP port between 10000/udp and 10007/udp.
# run
docker run --pull always -d -p 3000:3000/tcp -p 10000-10007:10000-10007/udp yandeu/geckos.io-example:latest
# open browser
http://localhost:3000/# build from dockerfile
docker build . -t yandeu/geckos.io-example:latest
# publish to docker hub
docker push yandeu/geckos.io-example:latest