How can I share R shiny App internally without data breach?

Question

I have developed a shiny App by installing R and R studio within local sever of my company and now I want to share app with my team.

Our data is sensitive and

1. I don't want my code and data go out of our server.
2. I don't want to deploy in shinyapp.io
3. I don't want to use Rstudio connect now (we plan to use this option later)

Please suggest a way that confirm data and code are 100% safe

Thanks