diff --git a/main.py b/main.py
index 5dad282..d713ce0 100644
--- a/main.py
+++ b/main.py
@@ -100,6 +100,14 @@ async def remove_node(node_id: int):
     conn.close()
     return RedirectResponse(url="/", status_code=303)
 
+async def check_docker_installed(ip, user):
+    # Prüft via SSH, ob der Befehl 'docker' existiert
+    cmd = "command -v docker >/dev/null 2>&1 && echo 'yes' || echo 'no'"
+    ssh_cmd = f"ssh -o StrictHostKeyChecking=no {user}@{ip} '{cmd}'"
+    process = subprocess.Popen(ssh_cmd, shell=True, stdout=subprocess.PIPE, text=True)
+    output = process.stdout.read().strip()
+    return output == "yes"
+    
 # --- Chat & KI Logik ---
 
 @app.websocket("/ws/chat")