nextstep/Dockerfile

# Stage 1: Dependencies
FROM node:20-slim AS deps
RUN apt-get update && apt-get install -y openssl build-essential python3 && rm -rf /var/lib/apt/lists/*
WORKDIR /app

COPY package.json package-lock.json* ./
COPY prisma ./prisma/

RUN npm ci

# Stage 2: Builder
FROM node:20-slim AS builder
RUN apt-get update && apt-get install -y openssl && rm -rf /var/lib/apt/lists/*
WORKDIR /app

COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Generate Prisma client
RUN npx prisma generate

# Build the application
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production

# Build args for NEXT_PUBLIC_* variables (needed at build time)
ARG NEXT_PUBLIC_VAPID_PUBLIC_KEY
ENV NEXT_PUBLIC_VAPID_PUBLIC_KEY=${NEXT_PUBLIC_VAPID_PUBLIC_KEY}

RUN npm run build

# Stage 3: Runner (using slim Debian for better OpenSSL compatibility)
FROM node:20-slim AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV TZ=Australia/Perth

RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Install OpenSSL and CA certificates for Prisma
RUN apt-get update && apt-get install -y openssl ca-certificates wget && rm -rf /var/lib/apt/lists/*

COPY --from=builder /app/public ./public
COPY --from=builder /app/prisma ./prisma
COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
COPY --from=builder /app/node_modules/argon2 ./node_modules/argon2
COPY --from=builder /app/node_modules/node-gyp-build ./node_modules/node-gyp-build

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

# Automatically leverage output traces to reduce image size
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Start the app (run migrations separately with: docker exec nextstep-app npx prisma migrate deploy)
CMD ["node", "server.js"]