# Build stage
FROM node:22-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy source code
COPY . .

# Copy PDF.js worker to static directory for local serving
# This avoids CDN dependency and CORS issues with ESM modules
RUN cp node_modules/pdfjs-dist/build/pdf.worker.min.mjs static/

# Build the application
RUN npm run build

# Production stage
FROM node:22-alpine AS production

WORKDIR /app

# Copy built application
COPY --from=builder /app/build ./build
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/node_modules ./node_modules

# Expose port
EXPOSE 3000

# Set environment variables
ENV NODE_ENV=production
ENV PORT=3000
ENV HOST=0.0.0.0

# Start the application
CMD ["node", "build"]