Overview
Your complete guide to Containers and deployment
The last build step: move your app from your machine to a link anyone can open. Docker packs the app with everything it needs, then configuration and secrets per environment, then cloud deployment with health checks and safe rollback.
Non-technical and technical learners alike. Every part opens two ways in: a plain path built on an analogy for someone starting from zero, and a detailed path for someone who knows the basics and wants depth.
An animation, then what you need before you start, then the idea with code you run, then a worked example, then review cards and "test your understanding" questions.
Do not leave a part before you can answer its questions without guessing. Reading alone proves nothing.
Pick a topic
A look at Containers and deployment
You wrap the app in a container, then separate its settings from its code, then deploy it and learn how to go back if something goes wrong.
| Part | Topic | You learn |
|---|---|---|
| 1 | Docker: images, containers and volumes | Images and containers, the Dockerfile, layers, volumes and Compose |
| 2 | Environments, configuration and secrets | Environment variables, .env, validation at startup, and secrets |
| 3 | Deploying to the cloud | Hosting options, health checks, HTTPS, migrations and rollback |
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