FROM node:20-alpine

WORKDIR /app

# Install curl for health checks
RUN apk add --no-cache curl

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy source code
COPY src/ ./src/

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

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
  CMD curl -f http://localhost:8000/health || exit 1

# Start the application
CMD ["npm", "start"]