added dockerfile for build; updated readme dockerfile rebuild on dev instead of main

Author: trevorcampbell

Dockerfile

@@ -0,0 +1,28 @@
+FROM jupyter/scipy-notebook
+
+USER root
+
+# install vim
+RUN apt-get update && apt-get install -y vim
+
+USER ${NB_UID}
+
+WORKDIR "${HOME}"
+
+# remove the "work/" directory added in an earlier layer...
+RUN rm -rf work
+
+# Install R packages
+RUN mamba install --quiet --yes \
+        'numpy' \
+        'jinja2' \
+        'altair_data_server' \
+        'click' \
+        'ghp-import' \
+        'jupytext' \
+        'jupyter_contrib_nbextensions' \
+        'jupyter-book' \
+        'nodejs' \
+    && mamba clean --all -f -y \
+    && fix-permissions "${CONDA_DIR}" \
+    && fix-permissions "/home/${NB_USER}" 

README.md

@@ -33,8 +33,8 @@ in the root directory of this repository. The book can be viewed in your browser
 
 ### Update build environment
 
-You can update the build environment for the book by making changes to `Dockerfile` in the root of the repository in the `main` branch.
-If you push any changes to the `Dockerfile` on the `main` branch, GitHub will trigger a rebuild of the docker image,
+You can update the build environment for the book by making changes to `Dockerfile` in the root of the repository in the `dev` branch.
+If you push any changes to the `Dockerfile` on the `dev` branch, GitHub will trigger a rebuild of the docker image,
 push it to DockerHub, and update the `build_html.sh` script and book deploy GitHub action with the new image digest.
 
 ### Update public html