# --- STAGE 1: Build ---
FROM node:20-alpine AS builder
WORKDIR /app

# Install dependencies
COPY package.json ./
# We skip package-lock.json to avoid conflicts with manual version changes
RUN npm install

# Copy source and build
COPY . .
RUN npm run build

# --- STAGE 2: Runtime ---
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV PORT=7860

# Copy necessary files from builder
COPY --from=builder /app/next.config.ts ./
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

EXPOSE 7860

# Start the application
CMD ["npm", "start"]