docker

Multi-stage builds in a Dockerfile use multiple FROM statements to copy only necessary artifacts, reducing final image size and improving build speed. This approach separates the build environment from the production runtime.

Docker Compose defines and manages multi-container applications by specifying services, networks, and volumes in a YAML file. You can configure a web application alongside PostgreSQL and Redis to ensure production readiness across environments.

Docker security involves implementing vulnerability scanning, running containers as non-root users, and managing secrets effectively. These practices ensure secure deployments and maintainable configurations across development and production environments.

Yes, Docker provides comprehensive guidance and examples for containerizing applications like Node.js. You can create production-ready Dockerfiles that adhere to industry standards for image optimization and efficient, maintainable container deployments.

Inefficient Dockerfiles without multi-stage builds often cause slow build times and large image sizes. Applying best practices for image optimization and structuring Dockerfile instructions properly addresses these performance bottlenecks.

Docker Compose is needed when deploying multi-container applications, such as a web app with a database and cache. While a Dockerfile defines a single container, Compose orchestrates multiple services together for development and production.