added sanity test and gitignore file #38

Job	Run time
Build Rocks and Push Arch Specific Images / Get rocks	10s
Build Rocks and Push Arch Specific Images / Build rock (coredns, 1.11.1, ./, amd64, ghcr.io/canonical/coredns:fca44eb54d606eeeab16421fe9c85f8...	4m 13s
Build Rocks and Push Arch Specific Images / Build rock (coredns, 1.11.1, ./, arm64, ghcr.io/canonical/coredns:fca44eb54d606eeeab16421fe9c85f8...	3m 19s
Combine Rocks and Push Multiarch Manifest / Create Mulitarch Manifest	7s
scan-images / Scan image (ghcr.io/canonical/coredns:fca44eb54d606eeeab16421fe9c85f8c5ac14cc11134774ac7ba4e7278e...	27s
scan-images / Scan image (ghcr.io/canonical/coredns:fca44eb54d606eeeab16421fe9c85f8c5ac14cc11134774ac7ba4e7278e...	22s
	8m 38s

Provide feedback