diff --git a/R-minimal/install.R b/R-minimal/install.R
index e69de29..d91783a 100644
--- a/R-minimal/install.R
+++ b/R-minimal/install.R
@@ -0,0 +1,9 @@
+# This file contains packages which should be added to the notebook
+# during the build process. It is standard R code which is run during
+# the build process and typically comprises a set of `install.packages()`
+# commands.
+#
+# For example, remove the comment from the line below if you wish to
+# install the `ggplot2` package.
+#
+# install.packages('ggplot2')