docs: documentation improvements

docs/reference/extensions/expressjs-framework.rst

@@ -17,10 +17,12 @@ Node and NPM, inside the rock. Additionally, it transfers your project files to
 Project requirements
 ====================
 
-There is 1 requirement to be able to use the ``expressjs-framework`` extension:
+There are 3 requirements to be able to use the ``expressjs-framework``
+extension:
 
-1. There must be a ``package.json`` file in the ``app`` directory of the project
-    with ``start`` script defined.
+1. The application should reside in the ``app`` directory.
+2. The application should have a ``package.json`` file.
+3. The ``package.json`` file should defined the ``start`` script.
 
 ``parts`` > ``expressjs-framework/dependencies:`` > ``stage-packages``
 ======================================================================
@@ -57,7 +59,7 @@ example:
 Some files/directories, if they exist, are included by default. These include:
 ``<rock name>``, ``app.js``, ``migrate``, ``migrate.sh``, ``migrate.py``,
 ``bin``, ``public``, ``routes``, ``views``, ``package.json``,
-``package-lock.json``.
+``package-lock.json``, ``.npmrc``.
 
 Useful links
 ============

docs/tutorial/expressjs.rst

@@ -109,7 +109,7 @@ the ``.rock`` extension:
     :end-before: [docs:ls-rock-end]
     :dedent: 2
 
-The created rock is about 75MB in size. We will reduce its size later in this
+The created rock is about 92MB in size. We will reduce its size later in this
 tutorial.
 
 .. note::
@@ -240,8 +240,8 @@ In ``rockcraft.yaml``, change the ``base`` to ``bare`` and add
 
 .. note::
     The ``sed`` command replaces the current ``base`` in ``rockcraft.yaml`` with
-    the ``bare`` base. The command also adds a ``build-base`` which is required
-    when using the ``bare`` base.
+    the ``bare`` base. Note that ``build-base`` is also required when using the
+    ``bare`` base.
 
 So that we can compare the size after chiselling, open the ``rockcraft.yaml``
 file and change the ``version`` (e.g. to ``0.1-chiselled``). Pack the rock with

rockcraft/templates/expressjs-framework/rockcraft.yaml.j2

@@ -30,7 +30,7 @@ extensions:
 #   expressjs-framework/install-app:
 #     prime:
 #       # by default, only the files in bin/, public/, routes/, views/, app.js,
-# 	    # package.json package-lock.json are copied into the image.
+#       # package.json package-lock.json are copied into the image.
 #       # You can modify the list below to override the default list and
 #       # include or exclude specific files/directories in your project.
 #       # note: prefix each entry with "app/" followed by the local path.