Labs/Docker

Docker

See what a container really is, write a clean Dockerfile, and understand image layers and Compose.

1. Containers are just processesSee that a container is a Linux process with its own view and limits - no VM inside. · 10 min · beginner
2. Write a Dockerfile that builds fastBuild a Dockerfile one step at a time: pinned base, cached install, non-root user. · 15 min · intermediate
3. Layers, multi-stage builds and ComposeOpen an image, find a "deleted" secret still inside it, then fix it and wire up Compose. · 20 min · intermediate