Optimize rockcraft build #36

Job	Run time
Build Rocks and Push Arch Specific Images / Get rocks	8s
Build Rocks and Push Arch Specific Images / Build rock (coredns, 1.11.1, ./, amd64, ghcr.io/canonical/coredns:7c7f9ae8bba31b5f2bfad1f7039638d...	4m 33s
Build Rocks and Push Arch Specific Images / Build rock (coredns, 1.11.1, ./, arm64, ghcr.io/canonical/coredns:7c7f9ae8bba31b5f2bfad1f7039638d...	5m 5s
scan-images / Scan image (ghcr.io/canonical/coredns:7c7f9ae8bba31b5f2bfad1f7039638dd764fff7b7ac553f4b8b286b575a...	22s
Combine Rocks and Push Multiarch Manifest / Create Mulitarch Manifest	13s
run-tests / Run tests	54s
scan-images / Scan image (ghcr.io/canonical/coredns:7c7f9ae8bba31b5f2bfad1f7039638dd764fff7b7ac553f4b8b286b575a...	25s
	11m 40s

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