build: switch to the rocker/shiny image as a base

Dockerfile

@@ -1,52 +1 @@
-########################################################
-#        Renku install section - do not edit           #
-
-FROM renku/renkulab-py:3.10-0.24.0 as builder
-
-# RENKU_VERSION determines the version of the renku CLI
-# that will be used in this image. To find the latest version,
-# visit https://pypi.org/project/renku/#history.
-ARG RENKU_VERSION=2.9.4
-
-# Install renku from pypi or from github if a dev version
-RUN if [ -n "$RENKU_VERSION" ] ; then \
-        source .renku/venv/bin/activate ; \
-        currentversion=$(renku --version) ; \
-        if [ "$RENKU_VERSION" != "$currentversion" ] ; then \
-            pip uninstall renku -y ; \
-            gitversion=$(echo "$RENKU_VERSION" | sed -n "s/^[[:digit:]]\+\.[[:digit:]]\+\.[[:digit:]]\+\(rc[[:digit:]]\+\)*\(\.dev[[:digit:]]\+\)*\(+g\([a-f0-9]\+\)\)*\(+dirty\)*$/\4/p") ; \
-            if [ -n "$gitversion" ] ; then \
-                pip install --no-cache-dir --force "git+https://github.com/SwissDataScienceCenter/renku-python.git@$gitversion" ;\
-            else \
-                pip install --no-cache-dir --force renku==${RENKU_VERSION} ;\
-            fi \
-        fi \
-    fi
-#             End Renku install section                #
-########################################################
-
-FROM renku/renkulab-py:3.10-0.24.0
-
-# Uncomment and adapt if code is to be included in the image
-# COPY src /code/src
-
-# Uncomment and adapt if your R or python packages require extra linux (ubuntu) software
-# e.g. the following installs apt-utils and vim; each pkg on its own line, all lines
-# except for the last end with backslash '\' to continue the RUN line
-#
-# USER root
-# RUN apt-get update && \
-#    apt-get install -y --no-install-recommends \
-#    apt-utils \
-#    vim
-# USER ${NB_USER}
-
-# install the python dependencies
-COPY requirements.txt environment.yml /tmp/
-RUN mamba env update -q -f /tmp/environment.yml && \
-    /opt/conda/bin/pip install -r /tmp/requirements.txt --no-cache-dir && \
-    mamba clean -y --all && \
-    mamba env export -n "root" && \
-    rm -rf ${HOME}/.renku/venv
-
-COPY --from=builder ${HOME}/.renku/venv ${HOME}/.renku/venv
+FROM rocker/shiny:4

README.md

@@ -1 +1,12 @@
-# Template for building Docker images in Renku 2.0
+# Shiny Serving Demo
+
+This is a demo project that serves a Shiny app from a Renku V2 project.
+
+
+## References
+
+This project builds on The Rocker Shiny which builds a Docker image containing the Shiny Server.
+
+- https://rocker-project.org/images/versioned/shiny.html
+- https://posit.co/download/shiny-server/
+- https://github.com/rstudio/shiny-server/