FROM node:18

WORKDIR /app

# Copy package files first and install deps (cache efficiency)
COPY package.json package-lock.json* ./
RUN npm install

# Copy all app source
COPY . .

# Fix permissions so Vite can write temp files
RUN chown -R node:node /app

# Run as non-root node user
USER node

# Expose port 7860
EXPOSE 7860

# Run dev server on HF Spaces port and host
CMD ["npm", "run", "dev"]