fix dockerfile

Dockerfile

@@ -13,7 +13,10 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 WORKDIR /build
 RUN git clone https://github.com/ggerganov/llama.cpp.git && \
     cd llama.cpp && \
-    cmake -B build -DCMAKE_BUILD_TYPE=Release -DGGML_NATIVE=OFF -DGGML_AVX2=OFF && \
+    cmake -B build -DCMAKE_BUILD_TYPE=Release \
+        -DGGML_NATIVE=OFF \
+        -DGGML_AVX2=OFF \
+        -DGGML_OPENMP=OFF && \
     cmake --build build --config Release --target llama-server -j$(nproc)
 
 # Runtime stage