new folder in webserver eith docker install webserver

webserver/installDocker/Dockerfile

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+# Flutter Tank Web App - Deployment Dockerfile
+FROM nginx:alpine
+
+# Remove default nginx website
+RUN rm -rf /usr/share/nginx/html/*
+
+# Copy the built Flutter web app
+COPY ../. /usr/share/nginx/html/
+
+# Copy nginx configuration
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+# Expose port 80 (internally, mapped to 8888 externally)
+EXPOSE 80
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]

webserver/installDocker/README.md

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+# Flutter Tank Web App - Docker Deployment
+
+Dieser Ordner enthält alle notwendigen Dateien für das Docker-Deployment der Flutter Tank Web App.
+
+## 📋 Voraussetzungen
+
+- Docker muss auf dem Server installiert sein
+- Port 8888 muss verfügbar sein
+
+## 🚀 Deployment
+
+### 1. Ordner auf Server kopieren
+
+Kopieren Sie den kompletten `webserver` Ordner auf Ihren Server:
+
+```bash
+scp -r webserver user@your-server:/path/to/destination/
+```
+
+### 2. In den installDocker Ordner wechseln
+
+```bash
+cd /path/to/destination/webserver/installDocker
+```
+
+### 3. Deployment ausführen
+
+```bash
+./deploy.sh
+```
+
+Das Script führt automatisch folgende Schritte aus:
+- Stoppt und entfernt bestehende Container
+- Baut das Docker Image
+- Startet den Container auf Port 8888
+- Zeigt den Status an
+
+## 🌐 Zugriff
+
+Nach erfolgreichem Deployment ist die App erreichbar unter:
+- **Web App:** `http://your-server:8888`
+- **Health Check:** `http://your-server:8888/health`
+
+## 🔧 Nützliche Befehle
+
+```bash
+# Logs anzeigen
+docker logs flutter-tank-web-container
+
+# Logs live verfolgen
+docker logs -f flutter-tank-web-container
+
+# Container stoppen
+docker stop flutter-tank-web-container
+
+# Container neustarten
+docker restart flutter-tank-web-container
+
+# Container und Image entfernen
+docker stop flutter-tank-web-container
+docker rm flutter-tank-web-container
+docker rmi flutter-tank-web
+```
+
+## 📁 Dateien
+
+- **Dockerfile** - Docker Image Definition (nginx:alpine mit Flutter Web Build)
+- **nginx.conf** - Nginx Konfiguration mit Gzip, Caching und Flutter Routing
+- **deploy.sh** - Automatisches Deployment-Script
+- **README.md** - Diese Dokumentation
+
+## 🔒 Sicherheit
+
+Die nginx.conf enthält bereits:
+- Security Headers (X-Frame-Options, X-Content-Type-Options, X-XSS-Protection)
+- Gzip Kompression für bessere Performance
+- Caching für statische Assets (1 Jahr)
+- Client-side Routing Support für Flutter
+
+## 🐛 Troubleshooting
+
+**Container startet nicht:**
+```bash
+docker logs flutter-tank-web-container
+```
+
+**Port bereits in Verwendung:**
+Ändern Sie in `deploy.sh` die Variable `PORT=8888` auf einen anderen Port.
+
+**Berechtigungsprobleme:**
+```bash
+chmod +x deploy.sh
+```

webserver/installDocker/deploy.sh

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+#!/bin/bash
+
+# Flutter Tank Web App - Deployment Script
+# This script builds and deploys the web app in a Docker container on port 8888
+
+set -e
+
+# Configuration
+IMAGE_NAME="flutter-tank-web"
+CONTAINER_NAME="flutter-tank-web-container"
+PORT=8888
+
+echo "🚀 Starting deployment of Flutter Tank Web App..."
+echo "================================================"
+
+# Stop and remove existing container if running
+if [ "$(docker ps -q -f name=$CONTAINER_NAME)" ]; then
+    echo "⏹️  Stopping existing container..."
+    docker stop $CONTAINER_NAME
+fi
+
+if [ "$(docker ps -aq -f name=$CONTAINER_NAME)" ]; then
+    echo "🗑️  Removing existing container..."
+    docker rm $CONTAINER_NAME
+fi
+
+# Remove old image (optional - comment out to keep old images)
+if [ "$(docker images -q $IMAGE_NAME)" ]; then
+    echo "🗑️  Removing old image..."
+    docker rmi $IMAGE_NAME || true
+fi
+
+# Build new Docker image
+echo "🔨 Building Docker image..."
+docker build -t $IMAGE_NAME .
+
+# Run container
+echo "🚀 Starting container on port $PORT..."
+docker run -d \
+    --name $CONTAINER_NAME \
+    -p $PORT:80 \
+    --restart unless-stopped \
+    $IMAGE_NAME
+
+# Wait a moment for container to start
+sleep 2
+
+# Check if container is running
+if [ "$(docker ps -q -f name=$CONTAINER_NAME)" ]; then
+    echo ""
+    echo "✅ Deployment successful!"
+    echo "================================================"
+    echo "🌐 Application is running at: http://localhost:$PORT"
+    echo "🏥 Health check: http://localhost:$PORT/health"
+    echo ""
+    echo "Useful commands:"
+    echo "  View logs: docker logs $CONTAINER_NAME"
+    echo "  Follow logs: docker logs -f $CONTAINER_NAME"
+    echo "  Stop: docker stop $CONTAINER_NAME"
+    echo "  Restart: docker restart $CONTAINER_NAME"
+    echo "================================================"
+else
+    echo "❌ Error: Container failed to start"
+    echo "Check logs with: docker logs $CONTAINER_NAME"
+    exit 1
+fi

webserver/installDocker/nginx.conf

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+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Compression
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml+rss application/json application/javascript;
+
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+
+    # Cache static assets
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # Flutter web routing - handle client-side routing
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Health check endpoint
+    location /health {
+        access_log off;
+        return 200 "healthy\n";
+        add_header Content-Type text/plain;
+    }
+}