September 2025
Beginner to intermediate
488 pages
12h 55m
English
Content preview from Learn Docker in a Month of Lunches, Second Edition
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7 Running multi-container apps with Docker Compose
Most applications don’t run in one single component. Even large old apps are typically built as frontend and backend components, which are separate logical layers running in physically distributed components. Docker is ideally suited to running distributed applications—from n-tier monoliths to modern microservices. Each component runs in its own lightweight container, and Docker plugs them together using standard network protocols. You define and manage multi-container apps like this using Docker Compose.
Compose is a file format for describing distributed Docker apps, and it’s a tool for managing them. Let’s revisit some apps from earlier in the book and see how Docker Compose makes it ...
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