Next.js doesn't resolve docker network defined hostnames

[jtara1]

Link to the code that reproduces this issue

https://gist.github.com/jtara1/bcf9b5f83d50d930763989611316146d

To Reproduce

• create project dir, named docker-compose-next-js
• mkdir api; cd api; npm init -y
• create a basic HTTP API using node.js and express or whatever, bind the http server to 0.0.0.0:3001
• cd ..
• create your next.js app as web-app
• in a react component useEffect, call await fetch('http://api:3001/')
• create Dockerfile's for each sub-projects
• create docker-compose.yaml such as

services:
  api:
    build:
      context: ./api
      dockerfile: Dockerfile
    ports:
      - "3001:3001"
    environment:
      - NODE_ENV=production
    restart: always

  web-app:
    build:
      context: ./web-app
      dockerfile: Dockerfile
      args:
        - NEXT_PUBLIC_API_BASE_URL=http://api:3001
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
    depends_on:
      - api
    restart: always

I can resolve the default docker-compose network hostname for my service, api, in a few places:

• docker web-app container
• next.config.mjs (hard-coded)

Current vs. Expected behavior

resolve http://api:3001 in a component

Provide environment information

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 10 Pro
  Available memory (MB): 32695
  Available CPU cores: 16
Binaries:
  Node: 20.13.1
  npm: N/A
  Yarn: N/A
  pnpm: N/A
Relevant Packages:
  next: 14.2.3 // There is a newer version (14.2.4) available, upgrade recommended!
  eslint-config-next: 14.2.3
  react: 18.3.1
  react-dom: 18.3.1
  typescript: 5.4.5
Next.js Config:
  output: N/A
 ⚠ There is a newer version (14.2.4) available, upgrade recommended!
   Please try the latest canary version (`npm install next@canary`) to confirm the issue still exists before creating a new issue.
   Read more - https://nextjs.org/docs/messages/opening-an-issue

Which area(s) are affected? (Select all that apply)

Not sure

Which stage(s) are affected? (Select all that apply)

next dev (local), next build (local), next start (local)

Additional context

No response

[github-actions]

We could not detect a valid reproduction link. Make sure to follow the bug report template carefully.

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I did not open this issue, but it is relevant to me, what can I do to help?

Anyone experiencing the same issue is welcome to provide a minimal reproduction following the above steps by opening a new issue.

I think my reproduction is good enough, why aren't you looking into it quickly?

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Useful Resources

• How to Contribute to Open Source (Next.js)
• How to create a Minimal, Complete, and Verifiable example
• Reporting a Next.js bug
• Next.js Triaging issues