Docker dependencies

workflows/shiny/Dockerfile

+# Use an official R base image
+FROM rocker/shiny:4.4
+
+# Install R packages
+RUN R -q -e 'install.packages("ggplot2")'
+
+EXPOSE 3838
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Default command to run when the container starts
+CMD ["R"]