Example Dockerfile does not copy .npmc / .yarnrc files

[H4kt]

Verify canary release

• I verified that the issue exists in the latest Next.js canary release

Provide environment information

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 11 Pro
  Available memory (MB): 32566
  Available CPU cores: 16
Binaries:
  Node: 20.12.2
  npm: N/A
  Yarn: N/A
  pnpm: 9.10.0
Relevant Packages:
  next: 14.2.10 // An outdated version detected (latest is 15.0.1), upgrade is highly recommended!
  eslint-config-next: N/A
  react: 18.3.1
  react-dom: 18.3.1
  typescript: 5.5.4
Next.js Config:
  output: standalone

Which example does this report relate to?

with-docker

What browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

No response

Describe the Bug

Currently example Dockerfile does not try to copy .npmrc / .yarnrc files which can lead to issues when installing packages

Expected Behavior

Example Dockerfile should attempt to copy those configuration files just like it attempts to copy the lock files

To Reproduce

1. Add a package from a private registry to your NextJS project
2. Copy the example Dockerfile into your project
3. Attempt to build the docker image