Module 19: Docker

MODULE 19 · 2 LESSONS

Package the application into small, reproducible images and orchestrate local dependencies.

Project checkpoint: Containerize the API and PostgreSQL development stack.

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Module 19 learning loopA four-step visual showing layers, build context, multi-stage builds, non-root runtime.Module 19 learning loop1Layers2Build Context3Multi-stage Builds4Non-root Runtime

Module 19 learning loop

  1. 1Layers
  2. 2Build Context
  3. 3Multi-stage Builds
  4. 4Non-root Runtime
Module 19 learning loop: a practical sequence used in this lesson.

What this module changes in your work

  • Separate build and runtime concerns while running as a non-root user.
  • Run multiple services with health-aware dependencies and persistent database storage.
  • Use layers, build context, multi-stage builds in one coherent implementation.
  • Complete this evidence-backed checkpoint: Containerize the API and PostgreSQL development stack.

Lessons

PROJECT CHECKPOINT

Turn docker into evidence

Containerize the API and PostgreSQL development stack.

  • Write acceptance criteria for layers before implementation.
  • Keep the change small enough that a reviewer can connect it to the intended behavior.
  • Use the most direct check available for build context and save the result.
  • Record one decision you would keep and one you would revisit after feedback.

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