# Dockerfile
FROM node:18-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci --only=production

# Copy source code
COPY src/ ./src/
COPY README.md .
COPY LICENSE .

# Create a minimal production image
FROM node:18-alpine

WORKDIR /app

# Copy from builder
COPY --from=builder /app ./

# Create non-root user
RUN addgroup -g 1001 -S nodejs && \
  adduser -S nodejs -u 1001

# Change ownership
RUN chown -R nodejs:nodejs /app

# Switch to non-root user
USER nodejs

# Expose port (if adding web server later)
EXPOSE 3000

# Default command for CLI
ENTRYPOINT ["node", "src/cli.js"]