FROM node:20-alpine AS builder
WORKDIR /app

# Copy package files for the worker
COPY package.json package-lock.json ./
RUN npm ci --ignore-scripts

# Cache-bust: change CACHEBUST value in docker-compose.yml to force rebuild
ARG CACHEBUST=1

COPY . .
RUN npm run build
RUN npm prune --production

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

# Install FFmpeg
RUN apk add --no-cache ffmpeg

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

# The FFmpeg worker runs as a standalone BullMQ consumer
CMD ["node", "dist/ffmpeg-worker/worker.js"]