Verbesserte

Dockerfile

@@ -1,22 +1,20 @@
-FROM node:18-alpine
-
-# Arbeitsverzeichnis im Container
+FROM node:18-alpine AS base
 WORKDIR /app
+ENV NODE_ENV=production
 
-# Kopieren der package.json-Dateien für effizienteres Caching
+# 1) Install dependencies (cached until package files change)
 COPY package*.json ./
+RUN npm ci
 
-# Installation von Abhängigkeiten
-RUN npm install
-
-# Kopieren des Quellcodes
-COPY . .
-
-# Build der React-App
+# 2) Build the React client (only re-run when client sources change)
+COPY public ./public
+COPY src ./src
 RUN npm run build
 
-# Freigegebener Port
-EXPOSE 3000
+# 3) Copy server-side files (changes here skip the expensive client build layer)
+COPY server.js ./
+COPY services ./services
+RUN mkdir -p config
 
-# Starten des Node.js-Servers
+EXPOSE 3000
 CMD ["node", "server.js"]