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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

Rolling Update
A deployment strategy that gradually replaces old application instances with new ones, maintaining availability throughout.
Nginx
A high-performance web server and reverse proxy known for its stability, low resource usage, and ability to handle many concurrent connections.
Chaos Engineering
The discipline of deliberately introducing failures into a system to test its resilience and identify weaknesses before they cause outages.
Docker
A platform for building, shipping, and running applications in lightweight, isolated containers.
Git
A distributed version control system that tracks changes in source code during software development.
YAML
A human-readable data serialization language commonly used for configuration files in DevOps tools and applications.
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