Add hostname to producer message

producer/pubsub.py

-import os, time, random, json
+import os, time, random, json, socket
 import redis
 
 host = os.environ.get("REDIS_SVC", "redis-svc")
@@ -7,9 +7,10 @@ channel = os.environ.get("CHANNEL", "xfan")
 
 stream = redis.Redis(host=host, port=port, db=0)
 
+me = socket.gethostname()
 i = 1
 while True:
-    msg = f"Message { i }"
+    msg = f"Hi, this is the message #{ i } from { me }."
     i = i + 1 
     n = random.randint(1, 3)
     time.sleep(n)