FROM node:18-alpine

WORKDIR /app

# Copy the frontend folder
COPY frontend/ ./frontend/

WORKDIR /app/frontend

# Install dependencies
RUN npm install

# Expose port 7860 for Hugging Face Spaces compatibility
EXPOSE 7860

# We build the application at runtime (CMD) instead of build time (RUN) 
# so that the VITE_GEMINI_API_KEY environment variable provided by Hugging Face 
# or docker-compose is successfully injected into the static build.
CMD ["sh", "-c", "if [ -f /var/run/secrets/VITE_GEMINI_API_KEY ]; then export VITE_GEMINI_API_KEY=$(cat /var/run/secrets/VITE_GEMINI_API_KEY); fi; if [ -f /var/run/secrets/GEMINI_API_KEY ]; then export GEMINI_API_KEY=$(cat /var/run/secrets/GEMINI_API_KEY); fi; export VITE_GEMINI_API_KEY=${VITE_GEMINI_API_KEY:-$GEMINI_API_KEY}; npm run build && npm run preview -- --port 7860 --host 0.0.0.0"]