Upgrade node to 10.0 in docker container

[akegan]

In order to fix a yarn error on the frontend, we needed to pin the docker hub container to 9.11.1 instead of using "latest".

The error in question was:
"error upath@1.0.4: The engine "node" is incompatible with this module. Expected version ">=4 <=9".
error Found incompatible module"

We should figure out an upgrade for that package that works for node 10.0