Add build container based on Debian 12 #376

Job	Run time
test-playbook (stratum0, rockylinux-8)	3m 58s
test-playbook (stratum0, ubuntu-20.04)	2m 9s
test-playbook (stratum0, ubuntu-22.04)	1m 39s
test-playbook (stratum1, rockylinux-8)	3m 6s
test-playbook (stratum1, ubuntu-20.04)	3m 9s
test-playbook (stratum1, ubuntu-22.04)	2m 14s
test-playbook (localproxy, rockylinux-8)	2m 45s
test-playbook (localproxy, ubuntu-20.04)	2m 24s
test-playbook (localproxy, ubuntu-22.04)	1m 55s
test-playbook (client, rockylinux-8)	3m 23s
test-playbook (client, ubuntu-20.04)	1m 52s
test-playbook (client, ubuntu-22.04)	1m 32s
	30m 6s

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