Dockerfile and Images

Multi-Stage Builds

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LearnStep 1 of 2

Multi-Stage Builds

Learning Objectives

•Understand multi-stage builds
•Reduce image size
•Separate build and runtime

Lesson Outline

LearnStep 1/2

Multi-Stage Builds

Multi-stage builds allow you to use multiple FROM statements, each starting a new build stage. You can copy artifacts from one stage to another, leaving behind everything you don't need.

Go Application Example

dockerfile

React Application Example

dockerfile

Benefits

Smaller Images: Only include runtime dependencies
Security: No build tools in production image
Separation: Clear distinction between build and runtime

Targeting Specific Stages

bash