Thanks for the responses. In the end it was an issue with www_root_path, which has been answered before:
I’m trying to keep the ShinyStudio architecture but I’m now using some of the settings used in openanalytics/shinyproxy-rstudio-ide-demo as well.
This type of set up is similar to what I’m looking to do, and uses the openanalytics/shinyproxy-rstudio-ide-demo image: