docs: v15 documentation infrastructure #21

Job	Run time
regression (rocky8, precheck-main, on)	24m 43s
regression (rocky8, precheck-main, off)	27m 31s
regression (rocky8, plcheck, on)	13m 55s
regression (rocky8, plcheck, off)	14m 30s
regression (rocky9, precheck-main, on)	29m 1s
regression (rocky9, precheck-main, off)	24m 5s
regression (rocky9, plcheck, on)	14m 5s
regression (rocky9, plcheck, off)	12m 50s
regression (ubuntu22.04, precheck-main, on)	22m 18s
regression (ubuntu22.04, precheck-main, off)	26m 42s
regression (ubuntu22.04, plcheck, on)	12m 16s
regression (ubuntu22.04, plcheck, off)	11m 56s
	3h 53m 52s

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