Add extra_modules_script parameter, like RStudio app

form.yml

@@ -27,6 +27,13 @@ attributes:
   #     modules: "python/3.5 cuda/8.0.44"
   modules: "python"
 
+  extra_modules_script:
+    label: Extra modules script
+    help: If you'd like to load additional modules alongside jupyterhub, put the 'module load ...' commands into a text file (one 'module load...' per line) and specify its path here
+    widget: text_field
+    required: false
+
+
   # Any extra command line arguments to feed to the `jupyter notebook ...`
   # command that launches the Jupyter notebook within the batch job
   extra_jupyter_args: ""
@@ -42,6 +49,7 @@ attributes:
 #   Dashboard
 form:
   - modules
+  - extra_modules_script
   - extra_jupyter_args
   - bc_account
   - bc_queue

template/script.sh.erb

@@ -21,6 +21,12 @@ module load <%= context.modules %>
 module list
 <%- end -%>
 
+<%- unless context.extra_modules_script.blank? -%>
+if [[ -f <%= context.extra_modules_script %> ]]; then
+  source <%= context.extra_modules_script %>
+fi
+<%- end -%>
+
 # Benchmark info
 echo "TIMING - Starting jupyter at: $(date)"