Dockerfile

FROM node:20-alpine AS base

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

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

# Generate Prisma client (doesn't need a real DB)
RUN npx prisma generate

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

ENV NEXT_TELEMETRY_DISABLED=1
# Dummy DATABASE_URL for build (Prisma client import needs it, but no actual connection is made)
ENV DATABASE_URL="postgresql://dummy:dummy@localhost:5432/dummy"

RUN npm run build

# Production image
FROM base AS runner
WORKDIR /app

RUN apk add --no-cache openssl

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

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

# Create public dir (may be empty)
RUN mkdir -p public
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/@prisma ./node_modules/@prisma
COPY --from=builder /app/node_modules/prisma ./node_modules/prisma

# 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"

# Run migrations then start the server
CMD ["sh", "-c", "node node_modules/prisma/build/index.js db push --skip-generate && node server.js"]