update Dockerfile

- update maintainer info ;)
- use `cimg/python:3.9.9-browsers`, copied from
  the dash `.circleci/config.yml`
- install Julia 1.9.1

Author: etpinard

build/Dockerfile

@@ -1,12 +1,12 @@
-FROM circleci/python:3.7-stretch-node-browsers
-MAINTAINER Ryan Patrick Kyle "[email protected]"
+FROM cimg/python:3.9.9-browsers
+MAINTAINER Etienne Tétreault-Pinard "[email protected]"
 
 RUN sudo apt-get update \
  && sudo apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false
 
 RUN cd /usr/local/src \
  && sudo mkdir /usr/local/src/julia \
  && sudo curl -o julia.tar.gz --location --show-error \
- https://julialang-s3.julialang.org/bin/linux/x64/1.5/julia-1.5.1-linux-x86_64.tar.gz \
+ https://julialang-s3.julialang.org/bin/linux/x64/1.9/julia-1.9.1-linux-x86_64.tar.gz \
  && sudo tar --extract --gzip --strip 1 --directory=/usr/local/src/julia --file=julia.tar.gz \
- && sudo ln -s /usr/local/src/julia/bin/julia /usr/local/bin/julia 
+ && sudo ln -s /usr/local/src/julia/bin/julia /usr/local/bin/julia