added dynamic configuration of API_URL to docker deployments.

Now it works with editing only .env file.

docker/start-prd.sh

@@ -11,14 +11,35 @@ fi
 # Gehe ins Docker-Verzeichnis
 cd "$(dirname "$0")"
 
+# Load production environment variables
+if [ -f .env.prd ]; then
+    echo "📝 Loading configuration from .env.prd"
+    export $(grep -v '^#' .env.prd | xargs)
+else
+    if [ -f .env ]; then
+        echo "📝 Loading configuration from .env"
+        export $(grep -v '^#' .env | xargs)
+    else
+        echo "⚠️  Warning: .env not found, using defaults"
+    fi
+fi
+
 echo "📦 Building and starting production containers..."
+echo "🔧 Frontend will use API: ${API_URL:-https://bamort-api.trokan.de}"
+
 # Build before stopping existing containers
-docker-compose -f docker-compose.yml build
+docker-compose -f docker-compose.yml --env-file .env.prd build
 
 # Stoppe vorhandene Container
 docker-compose -f docker-compose.yml down
 
 # Baue und starte die Container
-docker-compose -f docker-compose.yml up --build -d
+docker-compose -f docker-compose.yml --env-file .env.prd up -d
 
-echo "✅ Production environment started."
+echo "✅ Production environment started."
+echo "📱 Frontend: http://localhost:8181"
+echo "🔌 Backend: http://localhost:8182"
+echo ""
+echo "💡 To change API URL: Edit .env.prd and run:"
+echo "   docker-compose -f docker-compose.yml restart frontend"
+echo "   (No rebuild needed!)"