auf docker umgestellt

JS/Dockerfile

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+# Observatory Simulation - Multi-stage Docker Build
+
+# Build Stage
+FROM node:18-alpine AS builder
+
+LABEL maintainer="Observatory Simulation"
+LABEL description="Teleskop und Kuppel Simulation mit WebSocket-Architektur"
+
+WORKDIR /app
+
+# Kopiere package files für optimale Layer-Caching
+COPY package*.json ./
+
+# Installiere nur Production Dependencies
+RUN npm ci --only=production && npm cache clean --force
+
+# Production Stage
+FROM node:18-alpine AS production
+
+# Erstelle non-root user für Sicherheit
+RUN addgroup -g 1001 -S nodejs && \
+    adduser -S observatory -u 1001
+
+WORKDIR /app
+
+# Kopiere node_modules aus Build Stage
+COPY --from=builder --chown=observatory:nodejs /app/node_modules ./node_modules
+
+# Kopiere Application Code
+COPY --chown=observatory:nodejs server.js ./
+COPY --chown=observatory:nodejs public ./public/
+
+# Wechsle zu non-root user
+USER observatory
+
+# Expose Port für WebSocket Server
+EXPOSE 3005
+
+# Health Check für Container-Monitoring
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD node -e "require('http').get('http://localhost:3005', (res) => { process.exit(res.statusCode === 200 ? 0 : 1) }).on('error', () => process.exit(1))"
+
+# Starte Observatory Simulation
+CMD ["node", "server.js"]