Remove the `bootstrap` dependency on the Docker images we ship #289

Job	Run time
Set skip_push if we are on a Pull Request	1s
Build and push vttestserver (mysql80)	1m 58s
Build and push lite (latest)	2m 2s
Build and push lite (percona80)	2m 3s
Build and push (bullseye, vtadmin)	1m 14s
Build and push (bullseye, vtorc)	34s
Build and push (bullseye, vtgate)	31s
Build and push (bullseye, vttablet)	40s
Build and push (bullseye, mysqlctld)	43s
Build and push (bullseye, mysqlctl)	42s
Build and push (bullseye, vtctl)	38s
Build and push (bullseye, vtctlclient)	39s
Build and push (bullseye, vtctld)	1m 9s
Build and push (bullseye, vtctldclient)	41s
Build and push (bullseye, logrotate)	28s
Build and push (bullseye, logtail)	25s
Build and push (bullseye, vtbackup)	50s
Build and push (bullseye, vtexplain)	38s
Build and push (bookworm, vtadmin)	1m 29s
Build and push (bookworm, vtorc)	35s
Build and push (bookworm, vtgate)	40s
Build and push (bookworm, vttablet)	44s
Build and push (bookworm, mysqlctld)	40s
Build and push (bookworm, mysqlctl)	41s
Build and push (bookworm, vtctl)	28s
Build and push (bookworm, vtctlclient)	29s
Build and push (bookworm, vtctld)	1m 7s
Build and push (bookworm, vtctldclient)	40s
Build and push (bookworm, logrotate)	29s
Build and push (bookworm, logtail)	30s
Build and push (bookworm, vtbackup)	31s
Build and push (bookworm, vtexplain)	32s
	25m 31s

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