Dockerfile

# ---- Build stage: install deps and produce dist/ (SPA + bundled server) ----
FROM node:22-alpine AS build
WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci

COPY . .
RUN npm run build

# ---- Runtime stage: minimal image with prod deps + built artifacts ----
FROM node:22-alpine
WORKDIR /app

ENV NODE_ENV=production
ENV PORT=3000

# esbuild bundles the server with --packages=external, so production
# dependencies must be present at runtime.
COPY package.json package-lock.json ./
RUN npm ci --omit=dev

COPY --from=build /app/dist ./dist

EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD node -e "fetch('http://localhost:' + (process.env.PORT || 3000) + '/api/health').then(r => process.exit(r.ok ? 0 : 1)).catch(() => process.exit(1))"

CMD ["node", "dist/server.cjs"]