Dockerize regluit for local development and testing

[rdhyee]

Why: test.unglue.it costs ~$88/month (EC2 + RDS) running 24/7. Local Docker would enable testing PRs without spinning up AWS infrastructure.

Requirements

• Django 1.11.29 + Python 3.8
• MySQL 8.0
• Redis (for Celery, optional for basic testing)
• Load production DB snapshot for realistic testing
• Run manage.py test locally
• Browse the site at localhost

Approach

• Dockerfile based on Python 3.8
• docker-compose.yml with app + MySQL + Redis services
• Docker-specific settings file (like doab-check's settings/docker.py)
• Script to load a production DB dump for realistic data
• Port 8000 or configurable

Prior art

doab-check is already dockerized (~/C/src/doab-check) with the same pattern:

• Dockerfile, docker-compose.yml, settings/docker.py
• Full production DB loaded via pg_dump
• Running at localhost:8001

Complexity notes

• Django 1.11 is old but Docker doesn't care — just pin Python 3.8
• MySQL instead of PostgreSQL (doab-check uses Postgres)
• Celery/Redis optional — most testing doesn't need background tasks
• settings/keys/ needs dummy values for local dev
• Static files need collectstatic

Related

• doab-check Docker: Dockerize doab-check for local development EbookFoundation/doab-check#6
• Test infrastructure costs: ~$88/month for EC2 t3.medium + RDS db.t3.medium