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DevOps Intermediate

What is Container Registry?

A storage and distribution service for container images, similar to a package repository but for Docker images.

Container registries store, version, and distribute container images. Docker Hub is the default public registry. Private registries include Amazon ECR, Google Container Registry, Azure Container Registry, and GitHub Container Registry.

Features include vulnerability scanning, image signing, access control, and automated builds. Images are identified by repository:tag (e.g., nginx:1.25-alpine). Registry best practices include scanning for vulnerabilities, using specific tags (not latest), and implementing image retention policies.

Related Terms

Docker
A platform for building, shipping, and running applications in lightweight, isolated containers.
Infrastructure as Code (IaC)
The practice of managing infrastructure through machine-readable configuration files rather than manual processes.
Log Aggregation
The process of collecting, centralizing, and indexing log data from multiple sources for unified search and analysis.
SonarQube
A platform for continuous code quality inspection that detects bugs, vulnerabilities, and code smells through static analysis.
Continuous Deployment
A practice where every code change that passes automated tests is automatically deployed to production.
Postmortem
A structured analysis conducted after an incident to understand what happened, why, and how to prevent recurrence — without assigning blame.
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