Is running shinyproxy on app platform possible?

Hi, I have an small app running on DO app platform https://www.frogletapps.com/

Its written in rshiny and setting it up on the app platform was reasonably easy.

The problem is it can only handle one user at a time as written. To overcome this there are probably numerous options, but I would like to use shinyproxy in the solution.

I can see how to set shinyproxy up on a droplet (including using the one-click setup option: https://marketplace.digitalocean.com/apps/shinyproxy), but is there a way to set it up on the app platform? If not, I will destroy the app and start building on droplet, but I do like the platform so it seems a shame.

My app is dockerised and on docker hub. Locally, and on a droplet, I can also run my app using shinyproxy dockerised following this setup. Where I struggle is how to set up the app platform environment to be able to do, among other commands, sudo docker network create sp-example-net. There is nowhere to run build commands on my app, despite this being in some documentation. To set up this environment, prior to launching the server would need docker installed, network set up, shinyproxy jar file downloaded. And to run the app a run command doing sudo docker run -v /var/run/docker.sock:/var/run/docker.sock:ro --group-add $(getent group docker | cut -d: -f3) --net sp-example-net -p 8080:8080 myapp

Or perhaps there is a more straightforward way to run shinyproxy on the app platform?

I did also attempt, against best practice guidance, to build a docker within a docker, but that failed miserably.