FROM node:20-alpine AS builder
WORKDIR /app

# Copy package files first for better caching
COPY package.json package-lock.json ./
RUN npm ci --ignore-scripts

# Copy source and build
COPY . .
RUN npm run build
RUN npm prune --production

# ── Production image ──────────────────────────────────────────
FROM node:20-alpine AS production
WORKDIR /app

COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/package-lock.json ./package-lock.json
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules

EXPOSE 4000

# Run TypeORM migrations on startup, then start the API
CMD ["sh", "-c", "npx typeorm migration:run -d dist/database/ormconfig.js 2>/dev/null; export NODE_OPTIONS='--max-old-space-size=1024' && npm run start:prod"]