Error: Could not find a production build in the '.next' directory

[pky1341]

Summary

Hello,

I'm experiencing an issue with my Next.js app in a Docker container. When I run docker run -p 3000:3000 web-sphere:latest, I get the following error:

Here's my Dockerfile:

Use the official Node.js 20 image as the base for the build stage

FROM node:20-alpine as builder

Set the working directory

WORKDIR /app

Copy package.json and package-lock.json

COPY package*.json ./

Increase the timeout for npm

RUN npm config set fetch-retry-maxtimeout 60000

Use a different npm registry (optional)

RUN npm config set registry https://registry.npmjs.org/

Update npm to the latest version

RUN npm install -g npm@latest

Install dependencies

RUN npm install

Correctly copy the entire project

COPY . .

Build the Next.js app

RUN npm run build

After the npm run build step

RUN ls -la /app/.next

Use the official Node.js 20 image as the base for the production stage

FROM node:20-alpine

Set the working directory

WORKDIR /app

Copy the entire app from the builder stage

COPY --from=builder /app .

Install production dependencies

RUN npm install --production

Expose the port the app will run on

EXPOSE 3000

Start the app

CMD ["npm", "start"]

I've tried building my app with next build before starting the production server, but I still get this error. Has anyone else encountered this issue? Any help would be appreciated.

Thanks!
package.json

Additional information

No response

Example

No response