# Step 1: Build React (Vite) app
FROM node:22-alpine AS build
WORKDIR /app
COPY package*.json ./
# If package-lock.json exists, npm ci is faster and reproducible
RUN npm ci || npm install
COPY . .
ENV NODE_ENV=production
RUN npm run build

# Step 2: Nginx runtime
FROM nginx:1.27-alpine
COPY nginx/nginx.conf /etc/nginx/conf.d/default.conf
COPY --from=build /app/dist /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]