add start.sh and update Dockerfile

start.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# Start Ollama in the background
+ollama serve &
+
+# Wait for Ollama to start
+sleep 5
+
+# Start FastAPI app
+uvicorn app:app --host 0.0.0.0 --port 7860