- nginx.conf: proxy /api/ to ${API_URL} (injected at container start via envsubst)
- Dockerfile: accept VITE_API_URL build arg; use envsubst CMD to hydrate nginx template
- src/utils/api.ts: export API_BASE using VITE_API_URL or fallback to /api
Enables nest-front to run on Coolify while nest-backend runs on Portainer.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>