Remove the `bootstrap` dependency on the Docker images we ship #288

Job	Run time
Set skip_push if we are on a Pull Request	1s
Build and push vttestserver (mysql80)	2m 8s
Build and push vitess/lite (latest)	2m 1s
Build and push vitess/lite (percona80)	2m 2s
Build and push (bullseye, vtadmin)	1m 12s
Build and push (bullseye, vtorc)	27s
Build and push (bullseye, vtgate)	38s
Build and push (bullseye, vttablet)	27s
Build and push (bullseye, mysqlctld)	31s
Build and push (bullseye, mysqlctl)	42s
Build and push (bullseye, vtctl)	40s
Build and push (bullseye, vtctlclient)	39s
Build and push (bullseye, vtctld)	1m 7s
Build and push (bullseye, vtctldclient)	34s
Build and push (bullseye, logrotate)	31s
Build and push (bullseye, logtail)	19s
Build and push (bullseye, vtbackup)	39s
Build and push (bullseye, vtexplain)	44s
Build and push (bookworm, vtadmin)	1m 18s
Build and push (bookworm, vtorc)	57s
Build and push (bookworm, vtgate)	32s
Build and push (bookworm, vttablet)	33s
Build and push (bookworm, mysqlctld)	44s
Build and push (bookworm, mysqlctl)	45s
Build and push (bookworm, vtctl)	47s
Build and push (bookworm, vtctlclient)	41s
Build and push (bookworm, vtctld)	1m 17s
Build and push (bookworm, vtctldclient)	33s
Build and push (bookworm, logrotate)	32s
Build and push (bookworm, logtail)	27s
Build and push (bookworm, vtbackup)	49s
Build and push (bookworm, vtexplain)	48s
	26m 5s

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