Docker Compose — Compose Build

Master building custom images with Docker Compose — from basic build: to multi-stage builds, build arguments, and caching strategies.

What You Will Learn

#	Topic	Description
1	Build Context & Dockerfile	Specifying what and how to build
2	Build Args	Parameterizing builds
3	Multi-Stage in Compose	Optimized production images
4	Build Cache & Secrets	Faster builds, secure inputs
5	Tagging Built Images	Naming and pushing images
6	Practice Exercises	Hands-on build challenges

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Build vs Image

┌─────────────────────────────────────────┐
│  image: nginx:alpine                    │
│  → Pull pre-built image from registry   │
│                                         │
│  build: ./api                           │
│  → Build image from local Dockerfile    │
└─────────────────────────────────────────┘

Use image: for off-the-shelf services (databases, caches). Use build: for your own application code.