change compilation flags

Dockerfile

@@ -16,11 +16,13 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # Clone and build llama.cpp with SSL support for HuggingFace Hub
 WORKDIR /build
 ARG CACHEBUST=6
-RUN git clone https://github.com/ggerganov/llama.cpp.git && \
+ARG LLAMA_CPP_REF=master
+ARG BUILD_JOBS=2
+RUN git clone --depth 1 --branch ${LLAMA_CPP_REF} https://github.com/ggerganov/llama.cpp.git && \
     cd llama.cpp && \
     cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release \
-        -DCMAKE_C_FLAGS_RELEASE="-O3 -DNDEBUG" \
-        -DCMAKE_CXX_FLAGS_RELEASE="-O3 -DNDEBUG" \
+        -DCMAKE_C_FLAGS_RELEASE="-O2 -DNDEBUG" \
+        -DCMAKE_CXX_FLAGS_RELEASE="-O2 -DNDEBUG" \
         -DGGML_NATIVE=OFF \
         -DGGML_AVX2=ON \
         -DGGML_AVX=ON \
@@ -31,7 +33,7 @@ RUN git clone https://github.com/ggerganov/llama.cpp.git && \
         -DGGML_BLAS_VENDOR=OpenBLAS \
         -DLLAMA_CURL=ON \
         -DLLAMA_OPENSSL=ON && \
-    cmake --build build --config Release --target llama-server -j"$(nproc)" && \
+    cmake --build build --config Release --target llama-server -j"${BUILD_JOBS}" && \
     echo "=== Binary dependencies ===" && \
     ldd build/bin/llama-server || true