FROM node:18-alpine

# Install system dependencies
RUN apk add --no-cache python3 py3-pip make g++

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install --production

# Copy application code
COPY . .

# Create nodejs user and group
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nodejs -u 1001

# Create logs directory with proper permissions
RUN mkdir -p logs && chown -R nodejs:nodejs logs

# Expose port
EXPOSE 3006

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
  CMD node health-check.js || exit 1

# Switch to non-root user
USER nodejs

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