apiVersion: batch/v1
kind: Job
metadata:
  name: fib
spec:
  template:
     metadata:
       name: fib
     spec:
       containers:
       - name: fib
         image: ruby:alpine
         command: ["ruby"]
         args:
         - -e
         - |
           a,b = 0,1
           100.times { puts b = (a = a+b) - b }
       restartPolicy: Never
