Update Dockerfile

Dockerfile

@@ -26,6 +26,8 @@ RUN rm -f /etc/apt/sources.list.d/*.list && \
     software-properties-common \
  && rm -rf /var/lib/apt/lists/*
 
+RUN apt-get remove --purge cuda-toolkit
+
 RUN add-apt-repository ppa:flexiondotorg/nvtop && \
     apt-get upgrade -y && \
     apt-get install -y --no-install-recommends nvtop