[auth][error] TypeError: fetch failed at node:internal/deps/undici/undici for Entra ID when running in Docker locally

[edwardccg]

I am getting this error when running inside docker in my local machine. The same standalone production build run in my machine directly is working perfectly. I have checked the following issues but none of this help.

• [auth][error] TypeError: fetch failed - Use My Public Repo to Reproduce the Issue Consistently #9811
• @auth/core@{0.22.0 / 0.23.0 / 0.24.0} breaking custom OAuth provider #9819

Error detail

standalone build trace:

[auth][error] TypeError: fetch failed
    at node:internal/deps/undici/undici:13178:13
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async [custom-fetch] (/app/apps/portal-ui/.next/server/chunks/447.js:379:64192)
    at async ob (/app/apps/portal-ui/.next/server/chunks/447.js:379:46774)
    at async o_ (/app/apps/portal-ui/.next/server/chunks/447.js:379:49648)
    at async ox (/app/apps/portal-ui/.next/server/chunks/447.js:379:52290)
    at async oP (/app/apps/portal-ui/.next/server/chunks/447.js:379:56446)
    at async /app/node_modules/next/dist/compiled/next-server/app-route.runtime.prod.js:6:36957
    at async eC.execute (/app/node_modules/next/dist/compiled/next-server/app-route.runtime.prod.js:6:27552)
    at async eC.handle (/app/node_modules/next/dist/compiled/next-server/app-route.runtime.prod.js:6:38291)

next dev run inside docker container trace:

[auth][error] TypeError: fetch failed
    at node:internal/deps/undici/undici:13178:13
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async [custom-fetch] (webpack-internal:///(rsc)/../../node_modules/@auth/core/providers/microsoft-entra-id.js:126:34)
    at async getAuthorizationUrl (webpack-internal:///(rsc)/../../node_modules/@auth/core/lib/actions/signin/authorization-url.js:25:35)
    at async Module.signIn (webpack-internal:///(rsc)/../../node_modules/@auth/core/lib/actions/signin/index.js:16:56)
    at async AuthInternal (webpack-internal:///(rsc)/../../node_modules/@auth/core/lib/index.js:76:24)
    at async Auth (webpack-internal:///(rsc)/../../node_modules/@auth/core/index.js:130:34)
    at async /app/node_modules/next/dist/compiled/next-server/app-route.runtime.dev.js:6:55778
    at async eO.execute (/app/node_modules/next/dist/compiled/next-server/app-route.runtime.dev.js:6:46527)
    at async eO.handle (/app/node_modules/next/dist/compiled/next-server/app-route.runtime.dev.js:6:57112)
    at async doRender (/app/node_modules/next/dist/server/base-server.js:1352:42)
    at async cacheEntry.responseCache.get.routeKind (/app/node_modules/next/dist/server/base-server.js:1562:40)
    at async DevServer.renderToResponseWithComponentsImpl (/app/node_modules/next/dist/server/base-server.js:1482:28)
    at async DevServer.renderPageComponent (/app/node_modules/next/dist/server/base-server.js:1908:24)
    at async DevServer.renderToResponseImpl (/app/node_modules/next/dist/server/base-server.js:1946:32)
    at async DevServer.pipeImpl (/app/node_modules/next/dist/server/base-server.js:921:25)
    at async NextNodeServer.handleCatchallRenderRequest (/app/node_modules/next/dist/server/next-server.js:272:17)
    at async DevServer.handleRequestImpl (/app/node_modules/next/dist/server/base-server.js:817:17)
    at async /app/node_modules/next/dist/server/dev/next-dev-server.js:339:20
    at async Span.traceAsyncFn (/app/node_modules/next/dist/trace/trace.js:154:20)
    at async DevServer.handleRequest (/app/node_modules/next/dist/server/dev/next-dev-server.js:336:24)
    at async invokeRender (/app/node_modules/next/dist/server/lib/router-server.js:173:21)
    at async handleRequest (/app/node_modules/next/dist/server/lib/router-server.js:350:24)
    at async requestHandlerImpl (/app/node_modules/next/dist/server/lib/router-server.js:374:13)
    at async Server.requestListener (/app/node_modules/next/dist/server/lib/start-server.js:141:13)

Version info:

"next": "^14.2.15",
"next-auth": "^5.0.0-beta.25",

env.local used by docker and local

I have tried setting AUTH_URL=http://localhost:3300/api/auth but it doesnt work

AUTH_SECRET=<Redacted>
AUTH_TRUST_HOST=true
AUTH_MICROSOFT_ENTRA_ID_ID=<Redacted>
AUTH_MICROSOFT_ENTRA_ID_SECRET=<Redacted>
AUTH_MICROSOFT_ENTRA_ID_TENANT_ID=<Redacted>

auth.ts

import NextAuth from 'next-auth';
import MicrosoftEntraID from 'next-auth/providers/microsoft-entra-id';

export const { handlers, auth, signIn, signOut } = NextAuth({
  providers: [
    MicrosoftEntraID({
      clientId: process.env.AUTH_MICROSOFT_ENTRA_ID_ID,
      clientSecret: process.env.AUTH_MICROSOFT_ENTRA_ID_SECRET,
      issuer: `https://login.microsoftonline.com/${process.env.AUTH_MICROSOFT_ENTRA_ID_TENANT_ID}/v2.0`,
    }),
  ],
});

next.config.js and Dockerfile

• My repo is a Nx monorepo setup, code located under apps/portal-ui, hence its running the server.js in the path of apps/portal-ui.

//@ts-check

// eslint-disable-next-line @typescript-eslint/no-var-requires
const { composePlugins, withNx } = require('@nx/next');
const createNextIntlPlugin = require('next-intl/plugin');

const withNextIntl = createNextIntlPlugin();
/** type {import('next').NextConfig} */

/**
 * @type {import('@nx/next/plugins/with-nx').WithNxOptions}
 **/
const nextConfig = {
  cleanDistDir: true,
  nx: {
    // Set this to true if you would like to use SVGR
    // See: https://github.com/gregberge/svgr
    svgr: false,
  },
  output: 'standalone',
};

const plugins = [
  //withNx was blocking the Jest exit for some reason, disable it when NODE_ENV == 'test'
  ...(process.env.NODE_ENV == 'test' ? [] : [withNx]),

  withNextIntl,
  // Add more Next.js plugins to this list if needed.
];

module.exports = composePlugins(...plugins)(nextConfig);

• The CI process run next build first then run the docker build with following dockerfile. It just copy the standalone output into the image.

FROM node:22-bookworm-slim
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

COPY /apps/portal-ui/.next/standalone .
COPY /apps/portal-ui/.next/static ./apps/portal-ui/.next/static
COPY /apps/portal-ui/public ./public

EXPOSE 3300
ENV PORT=3300
ENV HOSTNAME="0.0.0.0"

CMD [ "node", "apps/portal-ui/server.js" ]