# Multi-stage Dockerfile for Algorithm Platform

# Stage 1: Build Frontend
FROM node:18-alpine AS frontend-build
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm install
COPY frontend/ ./
RUN npm run build

# Stage 2: Final Image (Python + Nginx)
# Use Python base image to ensure binary compatibility for pandas/numpy
FROM python:3.11-slim

# Install Nginx
RUN apt-get update && \
    apt-get install -y nginx && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Backend Dependencies
COPY backend/requirements.txt /app/backend/requirements.txt
RUN pip install --no-cache-dir -r /app/backend/requirements.txt

# Copy Backend Code
COPY backend /app/backend

# Copy Frontend Build from Stage 1
COPY --from=frontend-build /app/frontend/dist /usr/share/nginx/html

# Copy Nginx Config
COPY nginx.conf /etc/nginx/nginx.conf

# Copy Entrypoint Script
COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh

# Expose Port
EXPOSE 80

# Start Services
CMD ["/docker-entrypoint.sh"]