---
title: "Discussion on \"Fixing Two Docker Issues: Port Mapping and Backend Routing\" | Hashnode"
description: "Discussion on \"Fixing Two Docker Issues: Port Mapping and Backend Routing\". Learn how I fixed two common Docker setup problems in a React and FastAPI project: incorrect port mapping between 3000:80 and 3000:3000, and frontend-backen"
url: "https://hashnode.com/posts/fixing-two-docker-issues-port-mapping-and-backend-routing/68e4d397ef46ec4be8c8cf86"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [Fixing Two Docker Issues: Port Mapping and Backend Routing](https://syntaxnsoul.hashnode.dev/fixing-two-docker-issues-port-mapping-and-backend-routing?utm_source=hashnode&utm_medium=feed)

Learn how I fixed two common Docker setup problems in a React and FastAPI project: incorrect port mapping between 3000:80 and 3000:3000, and frontend-backen

Oct 7, 2025 · 3 min read · syntaxnsoul.hashnode.dev  
Read the article

-   [#docker](https://hashnode.com/tag/docker)
-   [#docker-images](https://hashnode.com/tag/docker-images)
-   [#docker-network](https://hashnode.com/tag/docker-network)
-   [#beginners](https://hashnode.com/tag/beginners)
-   [#dockerfile](https://hashnode.com/tag/dockerfile)

## Written by

[Dylan](https://hashnode.com/@Dylan1409)

@Dylan1409

  
[View profile](https://hashnode.com/@Dylan1409)

Aspiring Tech Writer

## Responses

Markdown supported · ⌘↵ to post

No responses yet.