julia: switch to multi-arch

root/etc/s6-overlay/s6-rc.d/init-mod-code-server-julia-install/run

@@ -23,11 +23,12 @@ fi
 if [ -d "/julia-bins" ]; then
   echo "**** Installing/updating Julia ****"
   mkdir -p /julia
-  tar xf "/julia-bins/julia-${ARCH}.tar.gz" -C \
+  tar xf "/julia-bins/julia.tar.gz" -C \
     /julia --strip-components=1
   rm -rf /usr/local/bin/julia
   ln -s /julia/bin/julia /usr/local/bin/julia
   chmod +x /julia/bin/julia
+  rm -rf /julia-bins
 else
   echo "**** Latest stable version of Julia already installed ****"
 fi