Building image not working in ShinyProxy

[danielquintao]

Hello,

I tried to build the image myself and use it with ShinyProxy, but it does not work. More precisely, I am testing locally with shinyproxy-2.6.1 (as a .jar) and I have the following error message:

It is worth noting, however, that everything works fine with your image openanalytics/shinyproxy-rstudio-ide-demo:2021.09.2_382__4.1.2 and the same configurations in the application.yml:

  # BUILT FROM SOURCE -- DOES NOT WORK
  - id: rstudio_custom
    display-name: RStudio Custom
    container-image: rstudio:4.1.2
    port: '8787'
    container-env:
      DISABLE_AUTH: true
      WWW_ROOT_PATH: "#{proxy.getRuntimeValue('SHINYPROXY_PUBLIC_PATH')}"
  # PULLED FROM DOCKERHUB -- WORKS
  - id: rstudio_openanalytics
    display-name: RStudio (ShinyProxy official image)
    container-image: openanalytics/shinyproxy-rstudio-ide-demo:2021.09.2_382__4.1.2
    port: '8787'
    container-env:
      DISABLE_AUTH: true
      WWW_ROOT_PATH: "#{proxy.getRuntimeValue('SHINYPROXY_PUBLIC_PATH')}"

The Dockerfile I used was the default one in the main branch, just without the comments:

FROM rocker/rstudio:4.1.2
RUN echo "www-frame-origin=same" >> /etc/rstudio/disable_auth_rserver.conf
RUN echo "www-verify-user-agent=0" >> /etc/rstudio/disable_auth_rserver.conf
ADD 03_setup_root_path.sh /etc/cont-init.d/03_setup_root_path.sh

Can you reproduce the error? Do you have any idea why I can't use the image I am building myself?

By the way, while trying to understand the problem, I compared the image history of openanalytics/shinyproxy-rstudio-ide-demo:2021.09.2_382__4.1.2 with the image history of rocker/rstudio:4.1.2. Other than the three lines we add in the Dockerfile after the FROM ..., there are other differences. In particular, we invoke the files /rocker_scripts/install_R.sh and /rocker_scripts/patch_install_command.sh which do not exist in rocker-versioned2/scripts (where /rocker_scripts/ is a directory in the container that is copied from a local scripts/ directory in the Dockerfile, so I wonder this scripts/ would be the rocker one).

Would these two missing files consist of custom scripts you made and without which we cannot have an image compatible with ShinyProxy?

[LEDfan]

Hi

I'm unable to reproduce your problem, I can re-build the image locally and this works fine. The difference in history is just because the rocker project refactored a few things and we didn't rebuild the image since then.
I think that the 404 you are getting is caused by the root path setting not working properly.

[danielquintao]

Hello,

Thank you for your response. Do you mean the env variable WWW_ROOT_PATH?
I've just opened a bash shell with docker exec in both containers: the one I built (I used the latest version of your demo repo by this day) which still does not work, and the one that I had pushed from DockerHub and which still works.
In both cases, the value of the variable is the same up to the app id:

root@e33c3476fd40:/# echo $WWW_ROOT_PATH
/app_direct_i/rstudio_custom/_/

root@b06f492c4dc1:/# echo $WWW_ROOT_PATH
/app_direct_i/rstudio_openanalytics/_/

However, I am not sure to understand the actual meaning of this environment var. The docs (v2.6.1) say

SHINYPROXY_PUBLIC_PATH: the public path used to access the app. This path conforms to $CONTEXT_PATH/app_direct/$APP_ID. However, by exposing this path as environment variable to every app, it can be used by the app without depending on a specific name for the path.
but I wonder where this path should hold. It must not be in the container's file system because ls $WWW_ROOT_PATH gets me nothing in both containers I tested (the custom one that did not work for me, and the official one which worked). Is that expeted?

In summary, my question here would be how is WWW_ROOT_PATH supposed to be used/what does it represent in Shinyproxy's perspective; and, in case root path setting not working properly is behind the cause of the error, whether this is a bug or some misconfiguration in application.yaml.

Thank you for your attention