internal errors encountered: unable to find package manager binary: cannot find binary path

[terion-name]

Summary

I am trying to work around the limitations of turbo with bun (specifically prune support)

Current attempt is looking like this:

FROM oven/bun:1.1.17 AS base


FROM node:22 AS builder
ARG PROJECT=app
WORKDIR /usr/app
RUN yarn global add turbo json
COPY . .
RUN json -I -f package.json -e "this.packageManager=\"[email protected]\""
RUN turbo prune --docker ${PROJECT}


FROM base AS installer
ARG PROJECT=app
COPY --from=builder /usr/app/out/json/ .
COPY ./yarn.lock ./yarn.lock
COPY ./package.json ./package.json
RUN bun install
COPY --from=builder /usr/app/out/full/ .
RUN bun turbo run build --filter=${PROJECT}


FROM base AS runner
ARG PROJECT=app
COPY --from=installer /home/bun/app/apps/${PROJECT}/build ./
COPY --from=installer /home/bun/app/apps/${PROJECT}/drizzle.config.json .

CMD bun /app/index.js

Root package.json:

{
  "name": "app-bundle",
  "devDependencies": {
    "@repo/eslint-config": "*",
    "cross-var": "^1.1.0",
    "dotenv-cli": "^7.4.2",
    "eslint": "^8.57.0",
    "prettier": "^3.2.5",
    "prettier-plugin-svelte": "^3.2.2",
    "turbo": "latest",
    "vitepress": "^1.2.3"
  },
  "packageManager": "[email protected]",
  "private": true,
  "scripts": {
    "build": "dotenv -- turbo run build",
    "dev": "dotenv --  turbo run dev --parallel",
    "lint": "turbo run lint",
    "format": "prettier --write \"**/*.{ts,tsx,md}\"",
    "db:intro": "cd apps/app/ && bun run db:introspect",
    "db:dump": "cd apps/supabase/ && bun run db:dump && cd ../app/ && bun run db:introspect"
  },
  "workspaces": [
    "apps/*",
    "packages/*"
  ]
}

Patch and prune seem to work fine

But at stage of build: RUN bunx turbo run build --filter=${PROJECT}I get:

 > [installer 8/8] RUN bunx turbo run build --filter=app:
0.132 
0.148 • Packages in scope: app
0.148 • Running build in 1 packages
0.148 • Remote caching disabled
0.155 app:build: cache miss, executing 0130570fd3223a35
0.156   x internal errors encountered: unable to find package manager binary: cannot
0.156   | find binary path

Which is very strange. Obviously bun binary is present in bun container, and package.json at this stage is not patched, it's original with "packageManager": "[email protected]"

What can be wrong here?

Additional information

No response

Example

No response

[terion-name]

Figured out. COPY --from=builder /usr/app/out/full/ . overriden package.json. Added another COPY ./package.json ./package.json and worked

[zeroows]

Reordering the commands fixed the issue for me. Here's what worked:

COPY . .
COPY --from=deps /app/node_modules ./node_modules
COPY --from=deps /app/package.json ./

The issue was resolved by moving the COPY—-from=deps /app/package.json ./ after copying everything else.