# Multi-stage build for React frontend with Nginx
FROM node:18-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install all dependencies (including dev) needed for build
RUN npm ci

# Copy source code
COPY . .

# Build the application
RUN npm run build

# Stage 2: Production image with Nginx
FROM nginx:alpine

# Copy custom nginx configuration
COPY nginx.conf /etc/nginx/conf.d/default.conf

# Copy built application from builder stage
COPY --from=builder /app/build /usr/share/nginx/html

# Expose port
EXPOSE 80

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost/ || exit 1

# Start nginx
CMD ["nginx", "-g", "daemon off;"]