Update Dockerfile

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@@ -42,7 +42,17 @@ RUN pip install --no-cache-dir textblob faker transformers
 RUN python -m ipykernel install --sys-prefix --name python3 --display-name "Python 3"
 
 # R kernel (system-wide, explicit name)
-RUN R -e "install.packages('IRkernel', repos='https://cloud.r-project.org/')"
+# RUN R -e "install.packages('IRkernel', repos='https://cloud.r-project.org/')"
+# RUN R -e "IRkernel::installspec(user = FALSE, name = 'ir', displayname = 'R')"
+
+# R packages needed by ranalysis.ipynb
+RUN R -e "install.packages( \
+  c('readr','dplyr','stringr','tidyr','lubridate', \
+    'ggplot2','forecast','broom','jsonlite'), \
+  repos='https://cloud.r-project.org')"
+
+# IRkernel for Jupyter / papermill, kernel name 'ir'
+RUN R -e "install.packages('IRkernel', repos='https://cloud.r-project.org')"
 RUN R -e "IRkernel::installspec(user = FALSE, name = 'ir', displayname = 'R')"
 
 #RUN python -m ipykernel install --user --name python3 --display-name "Python 3"