Не видите приложение Shiny на docker с заданным портом?

Question

Я новичок в docker, я пытаюсь запустить блестящее приложение на docker на дающем порту 3838. Ниже находится файл docker:

# get shiny serves plus tidyverse packages image
FROM rocker/shiny-verse:latest

# system libraries of general use
RUN apt-get update && apt-get install -y \
    sudo \
    pandoc \
    pandoc-citeproc \
    libcurl4-gnutls-dev \
    libcairo2-dev \
    libxt-dev \
    libssl-dev \
    libssh2-1-dev 
  

# install R packages required 
# (change it dependeing on the packages you need)
RUN R -e "install.packages('shiny', repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('shinydashboard', repos='http://cran.rstudio.com/')"
RUN R -e "devtools::install_github('andrewsali/shinycssloaders')"
RUN R -e "install.packages('lubridate', repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('magrittr', repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('glue', repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('DT', repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('plotly', repos='http://cran.rstudio.com/')"
RUN R -e "install.packages('shinybusy', repos='http://cran.rstudio.com/')"


# copy the app to the image

COPY testapp.R /srv/shiny-server/

# Copy further configuration files into the Docker image
COPY shiny-server.sh /usr/bin/shiny-server.sh

# Copy configuration files into the Docker image
COPY shiny-server.conf  /etc/shiny-server/shiny-server.conf


# select port
EXPOSE 3838

# allow permission
RUN sudo chown -R shiny:shiny /srv/shiny-server

# run app
CMD ["/usr/bin/shiny-server.sh",  "-e", "production"]

каталог:

cmd screen:

after this I am not able to see my applcation on localhost:3838

введите описание изображения здесь