#3087: jest.rst, verbose documentation

doc/test/jest.rst

@@ -3,10 +3,15 @@ Unit Test: Jest
 ===============
 
 Jest is used to perform unit testing against our reactjs frontend code. Specifically,
-our `package.json`, defines a corresponding `script`, to execute the set of unit tests:
+our `package.json`, defines a corresponding `script`, which can execute a set of unit
+tests. This can easiliest be done from the `browserify` container, provided by the
+rancher |development build|_:
 
 .. code:: bash
 
+    root@trusty64:/vagrant# docker build -f dockerfile/browserify.dockerfile -t jeff1evesque/ml-browserify:0.7 .
+    root@trusty64:/vagrant# docker run --hostname browserify --name browserify -d jeff1evesque/ml-browserify:0.7
+    root@trusty64:/vagrant# docker exec -it browserify /bin/bash
     root@browserify:/var/machine-learning/src/jsx# npm run test
 
     > reactjs@1.0.0 test /var/machine-learning/src/jsx
@@ -149,4 +154,6 @@ containing the `package.json`, within the `browserify` docker container.
 
 This frontend testing can be executed manually, as indicated above. However, it is also
 implemented within our travis ci. Therefore, each pull request, will verify the integrity
-of the reactjs frontend code.
+of the reactjs frontend code.
+
+.. _development build: ../installation/rancher