Fix `docker_lite_push` make target #847

Job	Run time
Set push variable	1s
Build and push vttestserver (mysql80)	2m 4s
Build and push lite (latest)	2m 10s
Build and push lite (percona80)	2m 18s
Build and push (bullseye, vtadmin)	1m 11s
Build and push (bullseye, vtorc)	47s
Build and push (bullseye, vtgate)	25s
Build and push (bullseye, vttablet)	41s
Build and push (bullseye, mysqlctld)	42s
Build and push (bullseye, mysqlctl)	37s
Build and push (bullseye, vtctl)	35s
Build and push (bullseye, vtctlclient)	25s
Build and push (bullseye, vtctld)	1m 10s
Build and push (bullseye, vtctldclient)	28s
Build and push (bullseye, logrotate)	24s
Build and push (bullseye, logtail)	23s
Build and push (bullseye, vtbackup)	42s
Build and push (bullseye, vtexplain)	50s
Build and push (bookworm, vtadmin)	1m 23s
Build and push (bookworm, vtorc)	25s
Build and push (bookworm, vtgate)	30s
Build and push (bookworm, vttablet)	30s
Build and push (bookworm, mysqlctld)	41s
Build and push (bookworm, mysqlctl)	35s
Build and push (bookworm, vtctl)	36s
Build and push (bookworm, vtctlclient)	42s
Build and push (bookworm, vtctld)	1m 13s
Build and push (bookworm, vtctldclient)	33s
Build and push (bookworm, logrotate)	31s
Build and push (bookworm, logtail)	23s
Build and push (bookworm, vtbackup)	48s
Build and push (bookworm, vtexplain)	28s
	25m 11s

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