dockerfile, fixes, organization edit page

Dockerfile

@@ -0,0 +1,29 @@
+# 1. Build-Stage
+FROM node:18-alpine AS build
+
+WORKDIR /app
+
+# package files kopieren
+COPY package*.json ./
+
+# dependencies installieren
+RUN npm install
+
+# restlichen Code kopieren
+COPY . .
+
+# React App bauen
+RUN npm run build
+
+# 2. Serve-Stage (Nginx)
+FROM nginx:alpine
+
+# build output in nginx kopieren
+COPY --from=build /app/build /usr/share/nginx/html
+
+# optional: eigene nginx config
+# COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 5173
+
+CMD ["nginx", "-g", "daemon off;"]