# Backend Dockerfile for Drone Detection System
FROM node:18-alpine AS base

# Install system dependencies and create user in one layer
RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    curl \
    dumb-init \
    netcat-openbsd \
    su-exec && \
    addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install --only=production && \
    npm cache clean --force

# Create directories and copy files with proper ownership in one step
RUN mkdir -p logs uploads/logos
COPY --chown=nodejs:nodejs . .
COPY --chown=root:root docker-entrypoint.sh /usr/local/bin/

# Set all permissions in one layer
RUN chmod +x /usr/local/bin/docker-entrypoint.sh && \
    chmod -R 755 /app/uploads && \
    chown -R nodejs:nodejs /app

# Stay as root for the entrypoint (it will switch to nodejs user)
# USER nodejs (commented out - entrypoint will handle user switching)

# Expose port
EXPOSE 3001

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:3001/api/health || exit 1

# Use custom entrypoint that handles permissions and user switching
ENTRYPOINT ["docker-entrypoint.sh"]

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