End-to-End Deployment: React + Express with Zero CORS Issues
Docker, NGINX, and AWS — the complete production setup
CORS errors are one of the most common production problems when deploying a React + Express application. This guide shows the exact setup to eliminate them permanently.
> Full content available on GitHub. This is a step-by-step deployment guide covering the complete production setup.
## What This Guide Covers
- Why CORS errors happen and what actually causes them - The correct way to structure a React + Express project for deployment - Dockerizing both the frontend and backend - NGINX as a reverse proxy — the key to eliminating CORS - Docker Compose for orchestrating both services - Environment variable management across environments - Deploying to AWS (EC2 / ECS) - Common pitfalls and how to avoid them
---
[Read the full guide on GitHub](https://github.com/mamun0193/rexpress-docker-aws)
About this guide
A complete step-by-step deployment guide for a React frontend and Express.js backend — covering Docker containerization, NGINX reverse proxy configuration, environment management, and the exact setup required to eliminate CORS errors in production.