---
# nuzlocke-tracker-yz9t
title: Optimize backend dev Dockerfile layer caching
status: completed
type: task
priority: normal
created_at: 2026-02-13T14:45:23Z
updated_at: 2026-02-13T14:47:48Z
---

Seed data changes (11MB in src/app/seeds/) invalidate the pip install layer because COPY src/ comes before RUN pip install -e. Fix by creating a minimal package stub before pip install, then copying full source after.