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

WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci --frozen-lockfile

COPY . .
RUN npm run build


# ── Stage 2: Serve with Nginx ─────────────────────────────────────────────────
FROM nginx:alpine AS runtime

# Remove default nginx config
RUN rm /etc/nginx/conf.d/default.conf

# Copy custom nginx config
COPY nginx.conf /etc/nginx/conf.d/app.conf

# Copy built React app
COPY --from=builder /app/dist /usr/share/nginx/html

EXPOSE 80

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