DevOps Intermediate

What is Docker Compose?

A tool for defining and running multi-container Docker applications using a YAML configuration file.

Docker Compose defines multi-container applications in a docker-compose.yml file. Services, networks, and volumes are declared, and a single command (docker compose up) starts everything. This is ideal for development environments and simple deployments.

A typical configuration includes application server, database, cache (Redis), and reverse proxy containers with defined dependencies, environment variables, port mappings, and volume mounts.

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Related Terms

A declarative GitOps continuous delivery tool for Kubernetes that automatically syncs cluster state with Git repositories.

An open-source tool for provisioning and managing cloud infrastructure using declarative configuration files.

An open-source container orchestration platform that automates deploying, scaling, and managing containerized applications.

Semantic Versioning

A versioning scheme using MAJOR.MINOR.PATCH numbers that communicates the nature of changes in each release.

Containerization

A lightweight virtualization method that packages applications with their dependencies into isolated, portable containers.

An infrastructure layer that handles service-to-service communication, providing load balancing, encryption, and observability.

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