Dockerfile

# syntax=docker/dockerfile:1
# Debian-based image: @roamhq/wrtc ships prebuilt binaries for glibc (not Alpine/musl).

FROM node:22-bookworm-slim AS base
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1

FROM base AS deps
RUN apt-get update \
  && apt-get install -y --no-install-recommends ca-certificates \
  && rm -rf /var/lib/apt/lists/*
COPY package.json package-lock.json* ./
RUN npm ci

FROM base AS builder
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ENV NODE_ENV=production
RUN npm run build

FROM base AS runner
ENV NODE_ENV=production
RUN groupadd --system --gid 1001 nodejs \
  && useradd --system --uid 1001 --gid nodejs nextjs

COPY --from=builder /app/public ./public
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

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