feat: implement update script and build/push workflow #6

Job	Run time
Build and Push Images (map-even-odd)	7s
Build and Push Images (map-flatmap)	12s
Build and Push Images (map-forward-message)	12s
Build and Push Images (map-retry)	9s
Build and Push Images (map-tickgen)	9s
Build and Push Images (map-flatmap-stream)	10s
Build and Push Images (reduce-counter)	10s
Build and Push Images (reduce-sum)	7s
Build and Push Images (reduce-stream-counter)	7s
Build and Push Images (reduce-stream-sum)	7s
Build and Push Images (session-counter)	9s
Build and Push Images (sideinput-example)	7s
Build and Push Images (udf-sideinput-example)	9s
Build and Push Images (sink-log)	7s
Build and Push Images (source-simple-source)	8s
Build and Push Images (mapt-assign-event-time)	10s
Build and Push Images (mapt-event-time-filter)	9s
	2m 29s

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