try to build with gpus

Dockerfile

@@ -1,4 +1,17 @@
-FROM julia:1.8
+FROM julia:1.8 as julia-base
+FROM nvidia/cuda:$11.2.0-cudnn8-devel-ubuntu20.04 as base
+
+# ubuntu 20.04 is derived from debian buster
+COPY --from=julia-base /usr/local/julia /usr/local/julia
+
+# since we are copying from julia-base, need to add to PATH
+ENV JULIA_PATH /usr/local/julia
+ENV PATH $JULIA_PATH/bin:$PATH
+# cuda env vars to use cuda & julia https://cuda.juliagpu.org/stable/installation/overview/
+ENV JULIA_CUDA_USE_BINARYBUILDER="false"
+ENV JULIA_DEBUG CUDA
+ENV CUDA_HOME /usr/local/cuda
+
 
 RUN useradd --create-home --shell /bin/bash genie
 RUN mkdir /home/genie/app