Docker & CI/CD (GitHub Actions)
Containerize confidently, then automate test → build → deploy on every push
Phase Goal
Understand containers deeply — images, layers, multi-stage builds, Compose, networking, volumes — then build GitHub Actions pipelines that lint, test, build images, and deploy automatically and safely.
Open the written lectures for this course before checking off the phase topics.
Day 140: Docker Mental Model & Fundamentals
Day 141: Writing Dockerfiles for Node
Day 142: Multi-Stage Builds & Image Optimization
Day 143: Docker Compose for Multi-Service Dev
Day 144: Docker in Depth
Day 145: GitHub Actions Fundamentals
Day 146: CI Pipeline — Lint, Test, Build
Day 147: Project — Flood-Alert Canary Delivery Pipeline
Flood-Alert Canary Delivery Pipeline — DEPLOYED
Containerize a flood-alert subscription service and build a safe release system around it: multi-stage image, Compose development stack, GitHub Actions gates, staging, a canary smoke test against fixture gauges, manual production approval, health verification, and a tested rollback.
- Reproducible multi-stage image and Compose stack with environment separation.
- CI runs lint, type checks, tests, image build, and dependency security checks.
- Staging verification, production approval, health check, and a tested rollback procedure.
Phase Complete!
After this phase, you'll be able to:
- Docker mental model: images, layers, registries, container lifecycle
- Production Dockerfiles: multi-stage, non-root, healthchecks, small images
- Docker Compose multi-service local dev with networks & volumes
- Docker networking, volumes, secrets, and debugging in depth
- GitHub Actions: workflows, matrix, caching, secrets, environments
- CI that lints/tests/builds and CD that pushes images & deploys safely
You can containerize any app and ship it through an automated pipeline — the baseline expectation for a modern backend/DevOps role.