build: Write a GCC specs file into workspace #3101

Job	Run time
Build melange and add to artifact cache	35s
Build packages (bubblewrap, hello-wolfi)	1m 26s
Build packages (bubblewrap, glibc)	13m 21s
Build packages (bubblewrap, tini)	1m 26s
Build packages (bubblewrap, lzo)	1m 32s
Build packages (bubblewrap, bubblewrap)	1m 26s
Build packages (bubblewrap, gitsign)	2m 45s
Build packages (bubblewrap, guac)	3m 52s
Build packages (bubblewrap, mdbook)	4m 2s
Build packages (bubblewrap, s3cmd)	1m 12s
Build packages (bubblewrap, perl-yaml-syck)	1m 16s
Build packages (bubblewrap, ncurses)	2m 19s
Build packages (qemu, hello-wolfi)	2m 35s
Build packages (qemu, glibc)	14m 21s
Build packages (qemu, tini)	2m 21s
Build packages (qemu, lzo)	2m 27s
Build packages (qemu, bubblewrap)	2m 32s
Build packages (qemu, gitsign)	3m 49s
Build packages (qemu, guac)	5m 31s
Build packages (qemu, mdbook)	5m 15s
Build packages (qemu, s3cmd)	2m 18s
Build packages (qemu, perl-yaml-syck)	2m 27s
Build packages (qemu, ncurses)	3m 4s
	1h 21m 52s

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