Update Dockerfile.cuda

Author: djthorpe

Dockerfile.cuda

@@ -57,7 +57,7 @@ COPY --from=build /usr/local/cuda/lib64/stubs/libcuda.so /usr/local/cuda/lib64/s
 
 FROM ${TARGET}
 ENV LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/local/cuda/lib64/stubs
-ENV PKG_CONFIG_PATH=/usr/lib/pkgconfig:${PKG_CONFIG_PATH}
+ENV PKG_CONFIG_PATH=/usr/lib/pkgconfig
 ENV PATH=/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 ENV NVIDIA_ARCH="${ARCH}"
 ENV NVIDIA_CUDA_VERSION="${CUDA}"