refactor: keep contents related commands in scripts #23

Job	Run time
build / main (38, silverblue, nokmods)	3m 19s
build / main (38, silverblue, kmods)	5m 53s
build / main (38, kinoite, nokmods)	4m 6s
build / main (38, kinoite, kmods)	5m 51s
build / main (38, sericea, nokmods)	3m 18s
build / main (38, sericea, kmods)	5m 45s
build / main (38, base, nokmods)	3m 9s
build / main (38, base, kmods)	5m 47s
build / main (38, lxqt, nokmods)	4m 0s
build / main (38, lxqt, kmods)	6m 53s
build / main (38, mate, nokmods)	4m 40s
build / main (38, mate, kmods)	7m 30s
build / main (38, vauxite, nokmods)	3m 44s
build / main (38, vauxite, kmods)	5m 57s
build / Check all 38 builds successful	1s
	1h 9m 53s

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