1. Build the publisher first

sudo docker build -t docker-zmq-pub .

docker run --name docker-pub-server -p 5000:5000 -p 4444:4444 -t docker-zmq-pub

2. Run the Client

python zmqclient.py

Make a request to localhost:5000/downcase/?Param=<String with mixed case letters>

Messages from publisher will be sent over to subscriber.

Additonally, it logs to a file called subscriber.log

You can read more about it here.