# Use the official Node.js runtime as the base image
FROM node:22-alpine AS base

# Install dependencies only when needed
FROM base AS deps
# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Install dependencies with npm only
COPY package.json package-lock.json ./
RUN npm install
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 . .

# Environment variables for build
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production

# Ensure all dependencies are installed for build
RUN npm install
RUN npm install --save-dev autoprefixer
RUN npm run build

# Production image, copy all the files and run next
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

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

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

# Copy built application (standalone output)
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static

# Set the correct permission for prerender cache
RUN chown -R nextjs:nodejs .next

USER nextjs

# Expose port
EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME=0.0.0.0

# Start the application (standalone)
CMD ["node", "server.js"]