feat: Add graceful shutdown #141

Job	Run time
Detect relevant changed files	4s
Run cargo-udeps	2m 9s
Build/Publish arm64 Image	5m 57s
Build/Publish amd64 Image	6m 24s
Package/Publish 0.0.0-pr110 Helm Chart	28s
Publish/Sign 0.0.0-pr110 Index	33s
Run OpenShift Preflight Check for 0.0.0-pr110-arm64	20s
Run OpenShift Preflight Check for 0.0.0-pr110-amd64	21s
Failure Notification	0s
Finished Build and Publish	2s
	16m 18s

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