Dockerfile

# Frontend Dockerfile for MAPS — Bun for install/build, minimal Node image at runtime.

FROM oven/bun:1 AS deps
WORKDIR /app

COPY package.json bun.lock* bun.lockb* ./
RUN bun install --frozen-lockfile

FROM oven/bun:1 AS builder
WORKDIR /app

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

ARG NEXT_PUBLIC_API_URL=
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
ARG BACKEND_INTERNAL_URL=http://backend:8000
ENV BACKEND_INTERNAL_URL=${BACKEND_INTERNAL_URL}

RUN bun run build

FROM node:22-bookworm-slim AS runner
WORKDIR /app

ENV NODE_ENV=production \
    PORT=3000 \
    HOSTNAME=0.0.0.0

COPY --from=builder --chown=node:node /app/.next/standalone ./
COPY --from=builder --chown=node:node /app/.next/static ./.next/static
COPY --from=builder --chown=node:node /app/public ./public

USER node

EXPOSE 3000

HEALTHCHECK --interval=45s --timeout=5s --start-period=60s --retries=3 \
    CMD node -e "require('http').get('http://127.0.0.1:3000/', (r) => process.exit(r.statusCode === 200 ? 0 : 1)).on('error', () => process.exit(1))"

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