school_compare/nextjs-app/Dockerfile

# Multi-stage build for Next.js application

# Stage 1: Dependencies
FROM node:24-alpine AS deps
WORKDIR /app

# Copy package files
COPY package.json package-lock.json* ./

# Install all dependencies (including devDependencies needed for build)
RUN npm ci

# Stage 2: Builder
FROM node:24-alpine AS builder
WORKDIR /app

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Set environment variables for build
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production

# Build argument for FastAPI URL (used by Next.js rewrites at build time)
ARG FASTAPI_URL=http://backend:80/api
ENV FASTAPI_URL=${FASTAPI_URL}

# Build application
RUN npm run build

# Stage 3: Runner
FROM node:24-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Create non-root user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Copy necessary files
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static

# Set correct permissions
RUN chown -R nextjs:nodejs /app

# Switch to non-root user
USER nextjs

# Expose port
EXPOSE 3000

# Set environment variables
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Start application
CMD ["node", "server.js"]