Use das6 ska-sdp-spack commit

docker/ci-runner/Dockerfile

-ARG SOURCE_IMAGE="debian:bookworm"
+ARG SOURCE_IMAGE="debian:12.10"
 FROM ${SOURCE_IMAGE}
 ENV DEBIAN_FRONTEND=noninteractive
 
@@ -29,9 +29,12 @@ RUN ln -s ${SPACK_DIR}/bin/spack /usr/local/bin/
 
 ENV SPACK_REPO_DIR=/opt/spack/repos
 RUN mkdir -p ${SPACK_REPO_DIR}
-RUN git clone --depth 1 https://gitlab.com/ska-telescope/ska-sdp-spack.git ${SPACK_REPO_DIR}/ska-sdp-spack
-RUN mkdir -p $HOME/.spack
-RUN echo "repos:\n- ${SPACK_REPO_DIR}/ska-sdp-spack" > $HOME/.spack/repos.yaml
+RUN git clone https://gitlab.com/ska-telescope/ska-sdp-spack.git ${SPACK_REPO_DIR}/ska-sdp-spack && \
+    cd ${SPACK_REPO_DIR}/ska-sdp-spack && \
+    git fetch --all && \
+    git checkout ded1a99bfb0dcc37a5d8f9404a10c509296e8e89
+#RUN mkdir -p $HOME/.spack
+#RUN echo "repos:\n- ${SPACK_REPO_DIR}/ska-sdp-spack" > $HOME/.spack/repos.yaml
 
 RUN wget --quiet -O NVIDIA-driver.run https://us.download.nvidia.com/tesla/550.90.12/NVIDIA-Linux-x86_64-550.90.12.run
 RUN chmod +x NVIDIA-driver.run