gistfile1.txt

Error: 
  sagas/index.js tries to connect to the Express server by calling localhost:3000
  This works as long as the server is running on the same machine.
  
Hypothesis:
  Calling IP_SERVER:3000 instead would solve the problem
  
Shallow Solution:
  Hardcode the server public IP to the code, build a Docker Image, push and create a Kubernetes app
  
True Solution:
  Pass server public IP as an enviroment variable to the Dockerfile.
  On the code, use the enviroment variable.