FROM node:18-alpine

# Install system dependencies
RUN apk add --no-cache \
    python3 \
    make \
    g++

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci --only=production

# Copy source code
COPY src/ ./src/

# Create necessary directories
RUN mkdir -p /app/logs /app/public/css /app/public/js /app/public/assets

# Run as non-root user
RUN addgroup -g 1001 -S nodejs
RUN adduser -S dashboard -u 1001
RUN chown -R dashboard:nodejs /app
USER dashboard

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD node src/healthcheck.js || exit 1

# Expose port
EXPOSE 3000

# Start the service
CMD ["node", "src/app.js"]