Back to pull request #1157

[RFC] many: add "ref" in file customizations to support host resources #4698

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Job	Run time
🛃 Unit tests (Fedora 40)	2m 39s
🛃 Unit tests (Fedora 41)	1m 48s
🛃 Container resolver tests	2m 21s
🛃 Unit tests (CentOS Stream 9)	5m 50s
🛃 Unit tests (CentOS Stream 10)	5m 51s
⌨ Lint	2m 33s
🐍 Lint (test scripts)	25s
🐍 pytest (imgtestlib)	37s
🐚 Shellcheck	5s
	22m 9s