DevOps Intermediate

What is Docker?

A platform for building, shipping, and running applications in lightweight, isolated containers.

Docker packages applications and their dependencies into containers — standardized units that run consistently across any environment. Unlike virtual machines, containers share the host OS kernel, making them lightweight and fast.

Key concepts include Dockerfiles (build instructions), images (templates), containers (running instances), volumes (persistent storage), and Docker Compose (multi-container apps).

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Microservices with Docker and Kubernetes

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Docker Security & Production Hardening

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Docker Fundamentals

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Related Terms

SRE (Site Reliability Engineering)

An engineering discipline that applies software engineering principles to infrastructure and operations to create reliable systems.

A structured analysis conducted after an incident to understand what happened, why, and how to prevent recurrence — without assigning blame.

Blue-Green Deployment

A deployment strategy using two identical environments where traffic is switched from the old version to the new one instantly.

A high-performance web server and reverse proxy known for its stability, low resource usage, and ability to handle many concurrent connections.

Artifact Repository

A centralized storage system for build artifacts like compiled binaries, packages, and container images used in CI/CD pipelines.

A platform for continuous code quality inspection that detects bugs, vulnerabilities, and code smells through static analysis.

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