9: Deploying Apps with Docker Compose

In this chapter, we’ll look at how to deploy multi-container applications using Docker Compose.

Docker Compose and Docker Stacks are very similar. In this chapter we’ll focus on Docker Compose, which deploys and manages multi-container applications on Docker nodes running in single-engine mode. In a later chapter, we’ll focus on Docker Stacks. Stacks deploy and manage multi-container apps on Docker nodes running in swarm mode.

We’ll split this chapter into the usual three parts:

• The TLDR
• The deep dive
• The commands

Deploying apps with Compose - The TLDR

Modern cloud-native apps are made of multiple smaller services that interact to form a useful app. We call this pattern “microservices”. A simple example might be an app with the following seven services:

• Web front-end
• Ordering
• Catalog
• Back-end database
• Logging
• Authentication
• Authorization

Get all of these working together, and...