# ---------- Build Stage ----------
    FROM node:16-alpine AS build

    WORKDIR /app
    
    # Install Ionic CLI (optional but safe)
    RUN npm install -g @ionic/cli@6 @angular/cli@12
    
    COPY package*.json ./
    RUN npm install
    
    COPY . .
    
    # Build production app
    RUN ionic build --prod
    
    # ---------- Run Stage ----------
    FROM nginx:alpine
    
    # Copy build output to nginx
    COPY --from=build /app/www /usr/share/nginx/html
    
    # Expose port
    EXPOSE 80
    
    CMD ["nginx", "-g", "daemon off;"]