BAC-L1-FOUND-117
Docker and reproducible environments
"Works on my machine" is not a result. Packaging a node and its dependencies so the lab runs identically everywhere.
- Level
- L1 — Blockchain developer
- Duration
- 4 h
- Track
- Foundation
- Maintainer
- Developer Curriculum Architect
Learning objectives
- 01Write a reproducible, versioned image
- 02Compose a local multi-container network
- 03Manage persistent volumes and chain data
Guided lab
Containerise a test node and bring up a three-node network that talks to itself.
Independent lab
Halve the image size without losing functionality, and document how.
Security angle
Unprivileged container, minimal base image, secrets kept out of the Dockerfile.
Assessment
Local network reproduced by a peer from the repository alone.