standalone output broken for webpack but not turbopack

[vonazt]

Summary

When I run a docker build of my next app with v15.4.1 I get this error:

⨯ Error: Could not find the module "/prod/app/src/components/ThemeToggle/index.tsx#default" in the React Client Manifest. This is probably a bug in the React Server Components bundler.

    at stringify (<anonymous>) {

  digest: '2433748686'

}

This is a new error after updating to v15.4.1. This is how I am copying the build over in my Dockerfile:

The files in the working container based on a 15.3.5 build look like this:

The files in the broken build look like this:

Note the extra src dir that is in the broken build, which seems to contain components that are a mix of server and client, but is an incomplete list of all the components in the source components dir. Do I need to update my Dockerfile? Has something changed in the next build that I've missed in the release notes?

Additional information

No response

Example

No response

[vonazt]

It seems like next is now bundling in any component that is imported into another component into the src directory in standalone. I've tried separating out client and server components and explicitly marking them as use client or use server but with no effect. Is this an intentional new feature?

[vonazt]

If i run next build --turbopack then it bundles everything correctly into standalone. With all the work done on turbopack for this release has there been some kind of possible regression?