Mastra•2mo ago

I need help with building mastra in Docker for Google Cloud Run

I am building a Mastra AI project, where I am also using Playwright. However, ever since the inclusion of Playwright, Mastra cannot build any longer. Mastra can build without issue on my Mac M4, but building within Docker with linux/amd64, and building on GitHub Actions yield 2 different failures.

6 Replies

KarlOP•2mo ago

Local Docker shows this error.

message.txt

KarlOP•2mo ago

And in GitHub Action (a real x86 machine) show

STEP 14/18: RUN bun run build
$ mastra build
ERROR [2025-10-30 20:35:48.960 +0000] (Mastra CLI): Failed to analyze Mastra application: ResolveMessage: Cannot find module 'file:/app/.mastra/.build/bundler-config.mjs' from '/app/node_modules/@mastra/deployer/dist/chunk-S5UMATJZ.js'
    domain: "DEPLOYER"
    category: "SYSTEM"
    details: ***
error: script "build" exited with code 1
Error: building at STEP "RUN bun run build": while running runtime: exit status 1

STEP 14/18: RUN bun run build
$ mastra build
ERROR [2025-10-30 20:35:48.960 +0000] (Mastra CLI): Failed to analyze Mastra application: ResolveMessage: Cannot find module 'file:/app/.mastra/.build/bundler-config.mjs' from '/app/node_modules/@mastra/deployer/dist/chunk-S5UMATJZ.js'
    domain: "DEPLOYER"
    category: "SYSTEM"
    details: ***
error: script "build" exited with code 1
Error: building at STEP "RUN bun run build": while running runtime: exit status 1

This is my Dockerfile

FROM ubuntu
RUN apt update -y
RUN apt install -y curl unzip
RUN curl -fsSL https://bun.com/install | bash -s "bun-v1.3.1"
ENV PATH "/root/.bun/bin:$PATH"

WORKDIR /app

COPY package.json .
COPY bun.lock .
COPY tsconfig.json .
RUN bun install --frozen-lockfile

COPY . .
RUN bunx playwright install-deps
RUN bunx playwright install

RUN bun run build

ENV NODE_ENV=production
# RUN bun test
RUN bun run build

EXPOSE 4111

CMD ["bun", "run", "--import=./.mastra/output/instrumentation.mjs", ".mastra/output/index.mjs"]

FROM ubuntu
RUN apt update -y
RUN apt install -y curl unzip
RUN curl -fsSL https://bun.com/install | bash -s "bun-v1.3.1"
ENV PATH "/root/.bun/bin:$PATH"

WORKDIR /app

COPY package.json .
COPY bun.lock .
COPY tsconfig.json .
RUN bun install --frozen-lockfile

COPY . .
RUN bunx playwright install-deps
RUN bunx playwright install

RUN bun run build

ENV NODE_ENV=production
# RUN bun test
RUN bun run build

EXPOSE 4111

CMD ["bun", "run", "--import=./.mastra/output/instrumentation.mjs", ".mastra/output/index.mjs"]

I tried to use the oven/bun:1 image, but now I tried with ubuntu and manual bun installation, but it still yields the same errors. And here is my Mastra setup in "index.ts"

export const mastra = new Mastra({
  bundler: {
    externals: [
      "playwright",
      "playwright-core",
      "bufferutil",
      "utf-8-validate",
    ],
    sourcemap: true,
  },
  workflows: { weatherWorkflow, attributeWorkflow },
  agents: { weatherAgent },
  scorers: {
    toolCallAppropriatenessScorer,
    completenessScorer,
    translationScorer,
  },
  storage: new LibSQLStore({
    // stores observability, scores, ... into memory storage, if it needs to persist, change to file:../mastra.db
    url: ":memory:",
  }),
  logger: new PinoLogger({
    name: "Mastra",
    level: "info",
  }),
  telemetry: {
    // Telemetry is deprecated and will be removed in the Nov 4th release
    enabled: false,
  },
  observability: {
    // Enables DefaultExporter and CloudExporter for AI tracing
    default: { enabled: true },
  },
})

export const mastra = new Mastra({
  bundler: {
    externals: [
      "playwright",
      "playwright-core",
      "bufferutil",
      "utf-8-validate",
    ],
    sourcemap: true,
  },
  workflows: { weatherWorkflow, attributeWorkflow },
  agents: { weatherAgent },
  scorers: {
    toolCallAppropriatenessScorer,
    completenessScorer,
    translationScorer,
  },
  storage: new LibSQLStore({
    // stores observability, scores, ... into memory storage, if it needs to persist, change to file:../mastra.db
    url: ":memory:",
  }),
  logger: new PinoLogger({
    name: "Mastra",
    level: "info",
  }),
  telemetry: {
    // Telemetry is deprecated and will be removed in the Nov 4th release
    enabled: false,
  },
  observability: {
    // Enables DefaultExporter and CloudExporter for AI tracing
    default: { enabled: true },
  },
})

Any help is appreciated.

Mastra Triager•2mo ago

📝 Created GitHub issue: https://github.com/mastra-ai/mastra/issues/9568

GitHub

[DISCORD:1433556160891453531] I need help with building mastra in D...

This issue was created from Discord post: https://discord.com/channels/1309558646228779139/1433556160891453531 I am building a Mastra AI project, where I am also using Playwright. However, ever sin...

_roamin_•2mo ago

Hey @Karl ! Could you try using nodejs in your docker container instead? Just to see if it builds that way.

KarlOP•3w ago

Hi Romain, I had the same result with NodeJS. Anyway, I switched to Firecrawl to bypass all the runtime requirements.

_roamin_•3w ago

Got it, thanks for getting back to me, appreciate it!

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I need help with building mastra in Docker for Google Cloud Run

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