Shiny on Google App Engine with Docker

[Stanislaw_S]

Hi,
Lately, I was trying to upload Shiny App with Docker on Google App Engine (on Google Cloud Platform).
Following tutorial (https://github.com/MarkEdmondson1234/appengine-shiny), I used Docker Image as below:

FROM rocker/shiny

# install R package dependencies
RUN apt-get update && apt-get install -y libssl-dev
    
## Install packages from CRAN
RUN R -e "install.packages(c('shiny', 'shinydashboard', 'here', 'dplyr', 'ggplot2', 'ggthemes', 'shinythemes', 'plotly', 'shinyWidgets', 'data.table'), repos='http://cran.rstudio.com/')"

EXPOSE 8080

## copy configuration file
COPY shiny-server.conf /etc/shiny-server/shiny-server.conf

## assume shiny app is in build folder /shiny
COPY ./app/ /srv/shiny-server/app/

However, I encountered the WebSocket Error that prevents Shiny app from working properly.
Maybe someone managed to succesfully deploy Shiny on App Engine and can share his working example code?

[MarkeD]

You have to be on the beta of websocket support for App Engine flexible, you can see some discussion in this issue