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fix(dockerfile): use UID 101 instead of 1000 to avoid conflict in node:20-alpine

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GID 1000 is already in use by the node:20-alpine base image.
Changed non-root user to use UID/GID 101 which is commonly available.

This fixes the Docker build error:
  'addgroup: gid 1000 in use'

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Alexis Bruneteau 2025-10-17 00:56:12 +02:00
parent d5c1c90c50
commit 2d07eeba10
2 changed files with 4 additions and 4 deletions
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4
Dockerfile
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@ -19,8 +19,8 @@ RUN npm run build
FROM node:20-alpine FROM node:20-alpine
# Create non-root user for security # Create non-root user for security
RUN addgroup -g 1000 nextjs && \ RUN addgroup -g 101 nextjs && \
adduser -D -u 1000 -G nextjs nextjs adduser -D -u 101 -G nextjs nextjs
WORKDIR /app WORKDIR /app

4
openspec/changes/fix-dockerfile-nextjs/tasks.md
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@ -9,7 +9,7 @@
- [x] 1.5 Copy source code and configuration files to build stage - [x] 1.5 Copy source code and configuration files to build stage
- [x] 1.6 Run Next.js build: `npm run build` to generate `.next/standalone` output - [x] 1.6 Run Next.js build: `npm run build` to generate `.next/standalone` output
- [x] 1.7 Create runtime stage from `node:20-alpine` (minimal image) - [x] 1.7 Create runtime stage from `node:20-alpine` (minimal image)
- [x] 1.8 Create `nextjs` non-root user (UID 1000) in runtime stage - [x] 1.8 Create `nextjs` non-root user (UID 101) in runtime stage
- [x] 1.9 Copy standalone output from build stage to runtime `/app` directory - [x] 1.9 Copy standalone output from build stage to runtime `/app` directory
- [x] 1.10 Copy public directory from source to runtime image (if exists) - [x] 1.10 Copy public directory from source to runtime image (if exists)
- [x] 1.11 Change ownership of /app to nextjs user - [x] 1.11 Change ownership of /app to nextjs user
@ -100,7 +100,7 @@
- **Expected Image Size**: ~150-200MB (optimized for production) - **Expected Image Size**: ~150-200MB (optimized for production)
- **Standalone Build**: `.next/standalone` verified at 78MB - **Standalone Build**: `.next/standalone` verified at 78MB
- **Health Check**: HTTP endpoint verification every 30 seconds - **Health Check**: HTTP endpoint verification every 30 seconds
- **Non-root User**: `nextjs` user (UID 1000:1000) - **Non-root User**: `nextjs` user (UID 101:GID 101)
### Testing Results ### Testing Results