Container Image Registry

Status: 🌱

Motivation

Standardize image distribution and artifact promotion across environments with traceability.

Connections

• DevOps
• Continuous Integration
• Security

Why Registry Matters

• Central distribution point for images across environments.
• Immutable history for auditability and safer rollbacks.
• Foundation for promotion flow (dev -> staging -> production).

Registry Essentials

• Push signed and versioned images (app:1.4.2, app:git-sha), avoid relying only on latest.
• Enable vulnerability scanning and retention/lifecycle policies.
• Restrict access by least privilege and use short-lived credentials.
• Promote the same image digest between environments (do not rebuild per stage).

CI + Registry Integration

• CI builds once, tags image, pushes to registry, and records digest.
• CD deploys by digest to guarantee the exact tested artifact.