Dockerfile

# syntax=docker.io/docker/dockerfile:1

FROM node:20-alpine AS base

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

# Install dependencies based on the preferred package manager
# SUPABASE_INSTALL_METHOD=none skips the CLI binary download in supabase's postinstall script
# (the binary is not needed at runtime — only the JS client is used)
COPY package.json package-lock.json* yarn.lock* pnpm-lock.yaml* .npmrc* ./
RUN \
  if [ -f yarn.lock ]; then SUPABASE_INSTALL_METHOD=none yarn --frozen-lockfile; \
  elif [ -f package-lock.json ]; then SUPABASE_INSTALL_METHOD=none npm ci --force; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && SUPABASE_INSTALL_METHOD=none 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 . .

# Build arguments for environment variables needed at build time
ARG NEXT_PUBLIC_SUPABASE_URL
ARG NEXT_PUBLIC_SUPABASE_ANON_KEY
ARG NEXT_PUBLIC_APP_URL

ENV NEXT_PUBLIC_SUPABASE_URL=$NEXT_PUBLIC_SUPABASE_URL
ENV NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY
ENV NEXT_PUBLIC_APP_URL=$NEXT_PUBLIC_APP_URL

# Disable telemetry during build
ENV NEXT_TELEMETRY_DISABLED=1

RUN npm run build

# Production image, run custom server with WebSocket support
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

RUN apk add --no-cache wget
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Copy built Next.js output
COPY --from=builder --chown=nextjs:nodejs /app/.next ./.next
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

# Copy source files needed by the custom server at runtime
COPY --from=builder --chown=nextjs:nodejs /app/server.ts ./
COPY --from=builder --chown=nextjs:nodejs /app/next.config.ts ./
COPY --from=builder --chown=nextjs:nodejs /app/tsconfig.json ./
COPY --from=builder --chown=nextjs:nodejs /app/package.json ./
COPY --from=builder --chown=nextjs:nodejs /app/lib ./lib
COPY --from=builder --chown=nextjs:nodejs /app/app ./app
COPY --from=builder --chown=nextjs:nodejs /app/types ./types
COPY --from=builder --chown=nextjs:nodejs /app/i18n ./i18n

# Full node_modules (includes tsx, ws, all runtime deps)
COPY --from=deps --chown=nextjs:nodejs /app/node_modules ./node_modules

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

CMD ["node_modules/.bin/tsx", "server.ts"]