Dockerfile

# Multi-stage build for Next.js application
FROM node:20-bookworm-slim AS base

# Install dependencies only when needed
FROM base AS deps
# Debian-based images don't use apk; install ca-certificates for SSL instead
RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates && rm -rf /var/lib/apt/lists/*
WORKDIR /app

# Copy package files
COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* ./
RUN \
  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  elif [ -f package-lock.json ]; then npm ci; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
  else echo "Lockfile not found." && exit 1; \
  fi

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

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

# Build Next.js application
RUN \
  if [ -f yarn.lock ]; then yarn build; \
  elif [ -f package-lock.json ]; then npm run build; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
  else echo "Lockfile not found." && exit 1; \
  fi

# Create public directory if it doesn't exist (for Docker COPY compatibility)
RUN mkdir -p /app/public

# Production image, copy all the files and run next
FROM base 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

# Install tsx and required dependencies for running TypeScript migrations
RUN npm install -g tsx
RUN npm install --production drizzle-orm postgres

# 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

# Copy public assets (directory created in builder stage to ensure it exists)
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

# Copy migration source files and dependencies
COPY --from=builder --chown=nextjs:nodejs /app/src ./src
COPY --from=builder --chown=nextjs:nodejs /app/tsconfig.json ./tsconfig.json
COPY --chown=nextjs:nodejs docker-entrypoint.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/docker-entrypoint.sh

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000/api/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

ENTRYPOINT ["docker-entrypoint.sh"]
CMD ["node", "server.js"]