FROM node:20-alpine

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

# Create app directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install --production

# Copy app source
COPY . .

# Create non-root user
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
USER nodejs

# Expose port
EXPOSE 3001

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

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