feat: Add graceful shutdown #72

Job	Run time
Detect relevant changed files	7s
Run cargo-udeps	2m 14s
Build/Publish amd64 Image	7m 15s
Build/Publish arm64 Image	5m 27s
Package/Publish 0.0.0-pr804 Helm Chart	24s
Publish/Sign 0.0.0-pr804 Index	23s
Run OpenShift Preflight Check for 0.0.0-pr804-arm64	21s
Run OpenShift Preflight Check for 0.0.0-pr804-amd64	21s
Failure Notification	-1s
Finished Build and Publish	3s
	16m 34s

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