Bun able to build Next.js locally, but not in docker.

[ImBIOS]

What version of Bun is running?

0.7.1

What platform is your computer?

Darwin 23.0.0 arm64 arm

What steps can reproduce the bug?

✅ Reproduce Next.js Local Build

1. build usually, and success.

🔴 Reproduce Next.js in Docker

Prerequisites:

# syntax = docker/dockerfile:1

# Adjust BUN_VERSION as desired
ARG BUN_VERSION=0.7.1
FROM oven/bun:${BUN_VERSION} as base

LABEL fly_launch_runtime="Next.js"

# Next.js app lives here
WORKDIR /app

# Set production environment
ENV NODE_ENV="production"

# Throw-away build stage to reduce the size of the final image
FROM base as build

# Install packages needed to build node modules
RUN apt-get update -qq && \
    apt-get install -y build-essential pkg-config python-is-python3

# Install node modules
COPY --link bun.lockb package.json ./
RUN bun install

# Copy application code
COPY --link . .

# Build application
RUN bun run build

# Remove development dependencies
RUN rm -rf node_modules && \
    bun install --ci

# Final stage for app image
FROM base

# Copy built application
COPY --from=build /app /app

# Start the server by default, this can be overwritten at runtime
EXPOSE 3000
CMD [ "bun", "run", "start" ]

1. run docker build .
2. It'll error in line 31 (RUN bun run build)

What is the expected behavior?

It should successfully build locally or docker.

What do you see instead?

 => ERROR [build 5/6] RUN bun run build                                                                                                                                            0.4s
------
 > [build 5/6] RUN bun run build:
0.135 $ next build
0.354  9 | 
0.354 10 | class NotImplementedError extends Error {
0.354 11 |   code;
0.354 12 |   constructor(feature, issue) {
0.354 13 | 
0.354 14 |     super(feature + " is not yet implemented in Bun." + (issue ? " Track the status & thumbs up the issue: https://github.com/oven-sh/bun/issues/" + issue : ""));
0.354        ^
0.354 NotImplementedError: node:diagnostics_channel is not yet implemented in Bun. Track the status & thumbs up the issue: https://github.com/oven-sh/bun/issues/2688
0.354  code: "ERR_NOT_IMPLEMENTED"
0.354 
0.354       at new NotImplementedError (node:diagnostics_channel:14:4)
0.354       at throwNotImplemented (node:diagnostics_channel:2:44)
0.354       at channel (node:diagnostics_channel:21:2)
0.354       at 4822 (/app/node_modules/next/dist/compiled/undici/index.js:2:163873)
0.354       at __nccwpck_require__ (/app/node_modules/next/dist/compiled/undici/index.js:3:13952)
0.354       at 4475 (/app/node_modules/next/dist/compiled/undici/index.js:3:6547)
0.354       at __nccwpck_require__ (/app/node_modules/next/dist/compiled/undici/index.js:3:13952)
0.354       at 9002 (/app/node_modules/next/dist/compiled/undici/index.js:1:27356)
0.354       at __nccwpck_require__ (/app/node_modules/next/dist/compiled/undici/index.js:3:13952)
0.354       at /app/node_modules/next/dist/compiled/undici/index.js:3:14201
0.357 error: script "build" exited with code 1 (SIGHUP)
------
Dockerfile:31
--------------------
  29 |     
  30 |     # Build application
  31 | >>> RUN bun run build
  32 |     
  33 |     # Remove development dependencies
--------------------
ERROR: failed to solve: process "/bin/sh -c bun run build" did not complete successfully: exit code: 1

Additional information

The Dockerfile is generated by flyctl (fly.io's cli). As far as I know, only fly.io supports bun, so I must deploy there.

[ImBIOS]

It tells me to check https://github.com/oven-sh/bun/issues/2688

[Electroid]

Thanks for reporting this issue, Next.js is likely loading node:diagnostics_channel when NODE_ENV=production, so it's unlikely this is a Docker-specific issue.

As you mentioned, we need to implement #2688 for this issue to be fixed.