# Build stage FROM node:18-alpine as build WORKDIR /app COPY package*.json ./ RUN npm install COPY . . # We inject the API URL for production build so nginx serves the correct config ARG REACT_APP_API_URL ENV REACT_APP_API_URL=$REACT_APP_API_URL RUN npm run build # Serve stage FROM nginx:alpine COPY --from=build /app/build /usr/share/nginx/html # Expose port 80 for Nginx EXPOSE 80 CMD ["nginx", "-g", "daemon off;"]