diff --git a/building/Dockerfile b/building/Dockerfile
index 7618415..6135ee3 100644
--- a/building/Dockerfile
+++ b/building/Dockerfile
@@ -2,7 +2,9 @@
 # on top of this image, use CMake to install the 
 # additional moonray dependencies.
 
-FROM nvidia/cuda:11.4.0-base-centos7
+# Use Rocky9 instead of Centos7, since Centos7
+# will be discontinued soon
+FROM arm64v8/rockylinux:9
 
 RUN yum install -y epel-release centos-release-scl.noarch
 RUN yum install -y devtoolset-9 devtoolset-9-gcc \
@@ -15,13 +17,12 @@ RUN yum install -y bison flex  wget git python3 python3-devel \
 # Not required when using cuda:11.4.0-base-centos7
 # RUN yum-config-manager --add-repo https://developer.download.nvidia.com/compute/cuda/repos/rhel7/x86_64/cuda-rhel7.repo
 RUN yum install -y mesa-libGL
-RUN yum install -y cuda-toolkit-11-4
 
 # Not needed if you skip building the GUI apps (CMake -DBUILD_QT_APPS=NO)
 RUN yum install -y qt5-qtbase-devel qt5-qtscript-devel
 
 RUN mkdir /installs /installs/bin /installs/lib /installs/include
-RUN cd /installs; wget https://github.com/Kitware/CMake/releases/download/v3.23.1/cmake-3.23.1-linux-x86_64.tar.gz; tar xzf cmake-3.23.1-linux-x86_64.tar.gz
-ENV PATH=/installs/cmake-3.23.1-linux-x86_64/bin:${PATH}
+RUN cd /installs; wget https://github.com/Kitware/CMake/releases/download/v3.23.1/cmake-3.23.1-linux-aarch64.tar.gz; tar xzf cmake-3.23.1-linux-aarch64.tar.gz
+ENV PATH=/installs/cmake-3.23.1-linux-aarch64/bin:${PATH}
 RUN mkdir /build
 CMD scl enable devtoolset-9 bash