fertig bis auf Tankstellen und Graph

proxy-server/Dockerfile

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+# Dockerfile für Node.js Proxy Server
+FROM node:18-alpine
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies (only production for smaller image)
+RUN npm ci --only=production
+
+# Copy application code
+COPY server.js ./
+
+# Expose port
+EXPOSE 3000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:3000/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
+
+# Run as non-root user
+USER node
+
+# Start server
+CMD ["node", "server.js"]