Update Dockerfile

Dockerfile

@@ -3,11 +3,13 @@ FROM ghcr.io/ggml-org/llama.cpp:full
 RUN apt update && apt install -y wget python3 python3-pip
 RUN pip install gradio requests
 
-RUN wget "https://huggingface.co/unsloth/gpt-oss-20b-GGUF/resolve/main/gpt-oss-20b-Q4_0.gguf" -O /gpt-oss-20b_Q4_0.gguf
-
 COPY app.py /app/app.py
 WORKDIR /app
 
-# Start llama.cpp in background + run your Gradio app
-CMD llama.cpp --server -m /gpt-oss-20b_Q4_0.gguf --port 7860 --host 0.0.0.0 -n 512 & \
-    python3 app.py
+CMD ["bash", "-c", "\
+if [ ! -f /gpt-oss-20b_Q4_0.gguf ]; then \
+  echo 'Downloading model...'; \
+  wget -q 'https://huggingface.co/unsloth/gpt-oss-20b-GGUF/resolve/main/gpt-oss-20b_Q4_0.gguf' -O /gpt-oss-20b_Q4_0.gguf; \
+fi; \
+llama.cpp --server -m /gpt-oss-20b_Q4_0.gguf --port 7860 --host 0.0.0.0 -n 512 & \
+python3 /app/app.py"]