Add project files

react-project/Dockerfile

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+# Build-Stage
+FROM node:16 AS build
+
+WORKDIR /app
+
+# Abhängigkeiten zuerst kopieren und installieren (für besseres Caching)
+COPY package*.json ./
+RUN npm install
+
+# Den Rest der Anwendung kopieren
+COPY . .
+
+# Build-Zeit-Variable setzen
+RUN echo "REACT_APP_BUILD_TIME=$(date)" > .env
+
+# Anwendung bauen
+RUN npm run build
+
+# Production-Stage
+FROM nginx:alpine
+
+# Build-Output vom build-Stage kopieren
+COPY --from=build /app/build /usr/share/nginx/html
+
+# Nginx-Konfiguration (optional)
+# COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]