####
# This Dockerfile is used to build a production-ready Next.js application
####

## Stage 1: Dependencies
FROM node:20-alpine AS deps
WORKDIR /app

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

## Stage 2: Build
FROM node:20-alpine AS builder
WORKDIR /app

COPY package.json package-lock.json* ./
RUN npm ci

COPY . .

# Build Next.js application
ENV NEXT_TELEMETRY_DISABLED 1
RUN npm run build

## Stage 3: Production image
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1

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

USER nextjs

EXPOSE 3000

ENV PORT 3000
ENV HOSTNAME "0.0.0.0"

CMD ["node", "server.js"]