akenny
January 11, 2018, 5:54pm
1
I’m having an issue when launching my application.
I’m trying to debug manually.
When I run
sudo docker run -p 3838:3838 tonyk7440/shiny_save
I get the error
shiny::runApp(‘/root/shiny_save’,
+
+Error: unexpected end of input
I have
CMD ["R", "-e shiny::runApp('/root/shiny_save', host='0.0.0.0', port=3838)"]
at the end of my dockerfile.
But when I run:
sudo docker run -p 3838:3838 tonyk7440/shiny_save R -e "shiny::runApp('/root/shiny_save', host='0.0.0.0', port = 3838)"
It runs perfect, the reason why I’m forcing the port in dockerfile is because it seems it to launch on random ports if not.
Link to application: GitHub - tonyk7440/shiny_save
Link to dockerfile: shiny_save/Dockerfile at master · tonyk7440/shiny_save · GitHub
akenny
January 11, 2018, 7:08pm
2
I also have another branch names no_port
git pull origin no_port
And when I try to run this interactively by just using
sudo docker run -p 3838:3838 tonyk7440/shiny_save
It runs but I get:
Listening on http://127.0.0.1:3548
instead of the usual
Listening on http://0.0.0.0:3838
I think this could be the reason why my application is unresponsive
Does anyone know what is going on that it is not starting on the right port?
akenny:
I have
CMD [“R”, “-e shiny::runApp(‘/root/shiny_save’, host=‘0.0.0.0’, port=3838)”]
at the end of my dockerfile.
The spaces inside the command lead to the error.
CMD ["R", "-e", "shiny::runApp('/root/shiny_save', host='0.0.0.0', port=3838)"]
should work.
Regarding the port, indeed by deafult shiny uses a random port, so you can’t easily expose it to shinyproxy, so you need to either pass it in the runApp
call or use global option via e.g. Rprofile.site
.
1 Like
akenny
January 12, 2018, 6:56pm
4
Thank you very much, worked a treat!