[rhel8] only build vgpu-util when the DRIVER_TYPE is vgpu

Signed-off-by: Tariq Ibrahim <tibrahim@nvidia.com>

Author: tariq1890

rhel8/Dockerfile

@@ -17,10 +17,11 @@ ENV PATH /usr/local/go/bin:$PATH
 
 WORKDIR /work
 
-RUN git clone https://github.com/NVIDIA/gpu-driver-container driver && \
+RUN if [ "$DRIVER_TYPE" = "vgpu" ]; then \
+    git clone https://github.com/NVIDIA/gpu-driver-container driver && \
     cd driver/vgpu/src && \
     go build -o vgpu-util && \
-    mv vgpu-util /work
+    mv vgpu-util /work; fi
 
 FROM ${BASE_IMAGE}