# Stage 1: Build
FROM node:20-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package.json and package-lock.json (or yarn.lock)
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy the rest of the app
COPY . .

# Build the app (React/Next/etc.)
RUN npm run build

# Stage 2: Production image
FROM node:20-alpine

WORKDIR /app

# Copy only build output and dependencies
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/build ./build

# Expose port
EXPOSE 3000

# Default command
CMD ["npm", "start"]
