add info on custom codespaces and using R with jupyter (#37)

code4mathorg · Aug 10, 2024 · 60e15fd · 60e15fd
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diff --git a/source/ch-coding.ptx b/source/ch-coding.ptx
@@ -335,4 +335,14 @@ recent commit.
     <caption>Repo from different points of view.</caption>
 </figure>
   </section>
+  <section xml:id="sec-custom-codespaces">
+    <title>Custom Codespaces</title>
+    <p>
+A key feature of Codespaces is that they can be customized by the use of a
+<c>.devcontainer.json</c> file (or <c>.devcontainer</c> directory). Such files describe
+the virtual machine that should be provisioned when creating a Codespace,
+allowing for the automatic installation of appropriate software/libraries/dependencies
+necessary for the use of a given repository.
+    </p>
+  </section>
 </chapter>
diff --git a/source/ch-jupyter.ptx b/source/ch-jupyter.ptx
@@ -133,4 +133,13 @@ I've provided a
 that you can upload to your Codespace to experiment with.
     </p>
   </section>
+  <section xml:id="sec-r-jupyter">
+    <title>Using R with Jupyter</title>
+    <p>
+To use R instead of Python with your Jupyter notebook,
+a custom dev container (<xref ref="sec-custom-codespaces"/>)
+configured for R notebooks is available at
+<url href="https://github.com/revodavid/devcontainers-rstudio"/>.
+    </p>
+  </section>
 </chapter>