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# syntax=docker/dockerfile:1.7
# Multi-stage build:
#   1. deps   β€” install pnpm + workspace dependencies (cached layer)
#   2. build  β€” compile packages/core + web SPA + apps/api TypeScript
#   3. runtime β€” copy artifacts + production deps + built frontend assets

ARG NODE_VERSION=20.18.0

# ── Stage 1: deps ──────────────────────────────────────────────────────────
FROM node:${NODE_VERSION}-bookworm-slim AS deps
ENV PNPM_HOME=/usr/local/pnpm
ENV PATH=$PNPM_HOME:$PATH
RUN apt-get update \
 && apt-get install -y --no-install-recommends python3 make g++ \
 && rm -rf /var/lib/apt/lists/* \
 && corepack enable \
 && corepack prepare pnpm@9.12.3 --activate
WORKDIR /app
COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
COPY packages/core/package.json packages/core/
COPY apps/web-legacy/package.json apps/web-legacy/
COPY apps/api/package.json apps/api/
RUN pnpm install --frozen-lockfile

# ── Stage 2: build ─────────────────────────────────────────────────────────
FROM deps AS build
COPY packages/core packages/core
COPY apps/web-legacy apps/web-legacy
COPY apps/api apps/api
RUN pnpm --filter @task-optimizer/core build \
 && pnpm --filter @task-optimizer/web-legacy build \
 && pnpm --filter @task-optimizer/api build

# ── Stage 3: runtime ───────────────────────────────────────────────────────
FROM node:${NODE_VERSION}-bookworm-slim AS runtime
ENV NODE_ENV=production
ENV PNPM_HOME=/usr/local/pnpm
ENV PATH=$PNPM_HOME:$PATH
RUN corepack enable \
 && corepack prepare pnpm@9.12.3 --activate
WORKDIR /app

# Workspace manifests + lockfile
COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
COPY packages/core/package.json packages/core/
COPY apps/web-legacy/package.json apps/web-legacy/
COPY apps/api/package.json apps/api/

# Production-only dependencies
RUN pnpm install --prod --frozen-lockfile

# Compiled artifacts
COPY --from=build /app/packages/core/dist packages/core/dist
COPY --from=build /app/apps/api/dist apps/api/dist

# Built SPA (served as static files)
COPY --from=build /app/apps/web-legacy/dist apps/web-legacy/dist

# Volume mount target β€” created here so first boot has the dir even before
# a host bind mount happens (e.g. for one-off `docker run` without compose).
RUN mkdir -p /app/data/uploads /app/data/exports

EXPOSE 3001

# Healthcheck β€” same endpoint the frontend uses to verify backend reachability
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD node -e "fetch('http://127.0.0.1:3001/api/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"

CMD ["node", "apps/api/dist/server.js"]