Dockerfile

# Multi-stage build for Next.js static export
FROM node:22-alpine AS base

# Install dependencies only when needed
FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Install dependencies based on the preferred package manager
COPY package.json package-lock.json* ./
RUN npm ci

# Rebuild the source code only when needed
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Build Next.js application (static export to out/)
RUN npm run build

# Production stage with nginx to serve static files
FROM nginx:alpine AS runner

# Copy static export output to nginx
COPY --from=builder /app/out /usr/share/nginx/html

# Copy custom nginx config for SPA routing
COPY nginx.conf /etc/nginx/conf.d/default.conf

EXPOSE 3001

CMD ["nginx", "-g", "daemon off;"]