feat: Add graceful shutdown #65

Job	Run time
Detect relevant changed files	7s
Build/Publish arm64 Image	5m 34s
Build/Publish amd64 Image	6m 45s
Run cargo-udeps	2m 3s
Package/Publish 0.0.0-pr747 Helm Chart	31s
Publish/Sign 0.0.0-pr747 Index	33s
Run OpenShift Preflight Check for 0.0.0-pr747-amd64	19s
Run OpenShift Preflight Check for 0.0.0-pr747-arm64	18s
Failure Notification	0s
Finished Build and Publish	3s
	16m 13s

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