Hi there.

I am just testing the “simple” authentication and I am trying to get the username to appear in the shiny app.

But what I’ve found is that I can find the SHINYPROXY_USERNAME env variable if I log in to the “root” user, but not from the “shiny” user.

How could I obtain access to this env variable? Or how could I modify it in order for ShinyProxy to send the variable to the “shiny” user?

Really thank you!


Hi @DrumSergio,

Do you mean you’re opening a shell into a running shiny container?
Those processes will indeed be running as root, as that is the default user for running a docker image.
You can specify an image to run as a different user via the USER instruction in the dockerfile:


I’ve explained all related to this problem here:

Thank you!


I’ve updated and written there (the link is on my previous post) a full example for you guys to try. It’s not working right now the env variable of SHINYPROXY_USERNAME. I appreciate your help a lot!


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Thank you @dm3ll3n !

I finished all of it before getting to know your project. Thanks a lot for sharing it! For sure it was a lot of work to make it all that easy. I wish I had known your project before finishing.

Thank you!


Don’t know if still useful, but I think your original problem is related to shiny-server’s behavior of removing environemnt variables - please see related answer: Reading SHINYPROXY_OIDC_ACCESS_TOKEN in app and links therein.


I’m sure it is, since Shiny and RStudio server are meant to handle multiple users. @DrumSergio, I just published the project last night, so you didn’t miss out. In working through the solution, your question was pertinent to the problems I had, so thanks for getting the conversation started.