diff --git a/Dockerfile b/Dockerfile
index d9b6e3c3..bc7c7606 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,6 +13,8 @@ ARG BASE_TAG=ubuntu-22.04
 ARG BASE_TAG=python-3.10.6
 FROM $BASE_CONTAINER:$BASE_TAG
 
+ARG BUILD_TYPE=Release
+
 LABEL maintainer="Xeus-clang-repl Project"
 #LABEL com.nvidia.volumes.needed="nvidia_driver"
 
@@ -29,26 +31,28 @@ ENV LC_ALL=en_US.UTF-8 \
 # Install all OS dependencies for notebook server that starts but lacks all
 # features (e.g., download as all possible file formats)
 RUN \
+    set -x && \
     apt-get update --yes && \
     apt-get install --yes --no-install-recommends pciutils && \
-    _CUDA_=$(lspci -nn | grep '\[03' | grep NVIDIA) && \
+    lspci && \
+    export _CUDA_="$(lspci -nn | grep '\[03' | grep NVIDIA)" && \
     apt-get install --yes --no-install-recommends \
-    #fonts-liberation, pandoc, run-one are inherited from base-notebook container image
+      #fonts-liberation, pandoc, run-one are inherited from base-notebook container image
     # Other "our" apt installs
-    unzip \
-    curl \
-    jq \
-    ###libomp-dev \
+      unzip \
+      curl \
+      jq \
+      ###libomp-dev \
     # Other "our" apt installs (development and testing)
-    build-essential \
-    git \
-    nano-tiny \
-    less \
-    gdb valgrind \
-    emacs \
+      build-essential \
+      git \
+      nano-tiny \
+      less \
+      gdb valgrind \
+      emacs \
     # CUDA
-    #cuda \
-    $([ -n "$_CUDA_" ] && echo nvidia-cuda-toolkit) \
+      #cuda \
+      $([ -n "$_CUDA_" ] && echo nvidia-cuda-toolkit) \
     && \
     apt-get clean && rm -rf /var/lib/apt/lists/* && \
     echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && \
@@ -246,7 +250,7 @@ RUN \
     mkdir build && \
     cd build && \
     export CPPINTEROP_BUILD_DIR=$PWD && \
-    cmake -DCMAKE_BUILD_TYPE=Debug -DUSE_CLING=OFF -DUSE_REPL=ON -DLLVM_DIR=$PATH_TO_LLVM_BUILD -DLLVM_USE_LINKER=gold -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=$CPPINTEROP_DIR .. && \
+    cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DUSE_CLING=OFF -DUSE_REPL=ON -DLLVM_DIR=$PATH_TO_LLVM_BUILD -DLLVM_USE_LINKER=gold -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=$CPPINTEROP_DIR .. && \
     cmake --build . --parallel $(nproc --all) && \
     #make install -j$(nproc --all)
     export CPLUS_INCLUDE_PATH="$CPPINTEROP_DIR/include:$CPLUS_INCLUDE_PATH" && \
@@ -262,7 +266,7 @@ RUN \
     # Install CppInterOp
     (cd $CPPINTEROP_BUILD_DIR && cmake --build . --target install --parallel $(nproc --all)) && \
     # Build and Install cppyy-backend
-    cmake -DCMAKE_BUILD_TYPE=Debug -DCppInterOp_DIR=$CPPINTEROP_DIR .. && \
+    cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCppInterOp_DIR=$CPPINTEROP_DIR .. && \
     cmake --build . --parallel $(nproc --all) && \
     cp libcppyy-backend.so $CPPINTEROP_DIR/lib/ && \
     cd ../.. && \
@@ -273,7 +277,7 @@ RUN \
     git clone https://github.com/compiler-research/CPyCppyy.git && \
     cd CPyCppyy && \
     mkdir build && cd build && \
-    cmake -DCMAKE_BUILD_TYPE=Debug .. && \
+    cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE .. && \
     cmake --build . --parallel $(nproc --all) && \
     export CPYCPPYY_DIR=$PWD && \
     cd ../.. && \
@@ -301,7 +305,7 @@ RUN \
     cd build && \
     echo "export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH" >> ~/.profile && \
     ##echo "conda activate .venv" >> ~/.profile
-    cmake -DCMAKE_BUILD_TYPE=Debug -DLLVM_CMAKE_DIR=$PATH_TO_LLVM_BUILD -DCMAKE_PREFIX_PATH=$KERNEL_PYTHON_PREFIX -DCMAKE_INSTALL_PREFIX=$KERNEL_PYTHON_PREFIX -DCMAKE_INSTALL_LIBDIR=lib -DLLVM_CONFIG_EXTRA_PATH_HINTS=${PATH_TO_LLVM_BUILD}/lib -DCPPINTEROP_DIR=$CPPINTEROP_BUILD_DIR -DLLVM_USE_LINKER=gold .. && \
+    cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DLLVM_CMAKE_DIR=$PATH_TO_LLVM_BUILD -DCMAKE_PREFIX_PATH=$KERNEL_PYTHON_PREFIX -DCMAKE_INSTALL_PREFIX=$KERNEL_PYTHON_PREFIX -DCMAKE_INSTALL_LIBDIR=lib -DLLVM_CONFIG_EXTRA_PATH_HINTS=${PATH_TO_LLVM_BUILD}/lib -DCPPINTEROP_DIR=$CPPINTEROP_BUILD_DIR -DLLVM_USE_LINKER=gold .. && \
     make install -j$(nproc --all) && \
     cd .. && \
     #
@@ -311,8 +315,9 @@ RUN \
     cd clad && \
     mkdir build && \
     cd build && \
-    cmake -DCMAKE_BUILD_TYPE=Debug .. -DClang_DIR=${PATH_TO_LLVM_BUILD}/lib/cmake/clang/ -DLLVM_DIR=${PATH_TO_LLVM_BUILD}/lib/cmake/llvm/ -DCMAKE_INSTALL_PREFIX=${CONDA_DIR} -DLLVM_EXTERNAL_LIT="$(which lit)" && \
-    make -j$(nproc --all) && \
+    cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE .. -DClang_DIR=${PATH_TO_LLVM_BUILD}/lib/cmake/clang/ -DLLVM_DIR=${PATH_TO_LLVM_BUILD}/lib/cmake/llvm/ -DCMAKE_INSTALL_PREFIX=${CONDA_DIR} -DLLVM_EXTERNAL_LIT="$(which lit)" && \
+    #make -j$(nproc --all) && \
+    make && \
     make install && \
     ### install clad in all exist kernels
     ##for i in "$KERNEL_PYTHON_PREFIX"/share/jupyter/kernels/*; do if [[ $i =~ .*/clad-xcpp.* ]]; then jq '.argv += ["-fplugin=$KERNEL_PYTHON_PREFIX/lib/clad.so"] | .display_name += " (with clad)"' "$i"/kernel.json > tmp.$$.json && mv tmp.$$.json "$i"/kernel.json; fi; done && \