Optimize Operator Input Handling #997

Job	Run time
Set push variable	1s
Build and push lite (latest)	2m 11s
Build and push vttestserver (mysql80)	2m 18s
Build and push lite (percona80)	2m 15s
Build and push (bullseye, vtadmin)	1m 15s
Build and push (bullseye, vtorc)	40s
Build and push (bullseye, vtgate)	30s
Build and push (bullseye, vttablet)	34s
Build and push (bullseye, mysqlctld)	39s
Build and push (bullseye, mysqlctl)	47s
Build and push (bullseye, vtctl)	42s
Build and push (bullseye, vtctlclient)	42s
Build and push (bullseye, vtctld)	1m 19s
Build and push (bullseye, vtctldclient)	41s
Build and push (bullseye, logrotate)	1m 3s
Build and push (bullseye, logtail)	31s
Build and push (bullseye, vtbackup)	36s
Build and push (bullseye, vtexplain)	39s
Build and push (bookworm, vtadmin)	1m 28s
Build and push (bookworm, vtorc)	29s
Build and push (bookworm, vtgate)	26s
Build and push (bookworm, vttablet)	41s
Build and push (bookworm, mysqlctld)	30s
Build and push (bookworm, mysqlctl)	31s
Build and push (bookworm, vtctl)	44s
Build and push (bookworm, vtctlclient)	30s
Build and push (bookworm, vtctld)	1m 12s
Build and push (bookworm, vtctldclient)	40s
Build and push (bookworm, logrotate)	22s
Build and push (bookworm, logtail)	46s
Build and push (bookworm, vtbackup)	38s
Build and push (bookworm, vtexplain)	29s
	26m 49s

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