Update Dockerfile

Dockerfile

@@ -26,7 +26,7 @@ RUN pip install --no-cache-dir --upgrade pip
 # Download model using wget directly (no token needed for public models)
 RUN apt-get update && apt-get install -y wget && \
     wget -q --show-progress \
-    "https://huggingface.co/Qwen/Qwen2.5-0.5B-Instruct-GGUF/resolve/main/qwen2.5-0.5b-instruct-q4_k_m.gguf" \
+    "https://huggingface.co/unsloth/Qwen3.5-0.8B-GGUF/resolve/main/Qwen3.5-0.8B-IQ4_XS.gguf" \
     -O /app/model.gguf && \
     echo "✅ Model size: $(du -sh /app/model.gguf)"