Update v4.5.x docs

static/docs/v4.5.x/_sources/contents/containers.rst.txt

@@ -213,6 +213,20 @@ when using the exec command. This works as follows:
    location, as it is almost always present and empty in every Linux
    distribution (as prescribed by the LSB file hierarchy standard).
 
+Files which should always be present in a container image like ``resolv.conf``
+can be specified in ``warewulf.conf``:
+
+.. code-block:: yaml
+   container mounts:
+   - source: /etc/resolv.conf
+     dest: /etc/resolv.conf
+     readonly: true
+
+.. note::
+   Instead of ``readonly: true`` you can set ``copy: true``. This causes the
+   source file to be copied to the container and removed if it was not
+   modified. This can be useful for files used for registrations.
+
 When the command completes, if anything within the container changed,
 the container will be rebuilt into a bootable static object
 automatically.

static/docs/v4.5.x/contents/containers.html

@@ -314,6 +314,14 @@ <h2>Making Changes To Containers<a class="headerlink" href="#making-changes-to-c
 location, as it is almost always present and empty in every Linux
 distribution (as prescribed by the LSB file hierarchy standard).</p>
 </div>
+<p>Files which should always be present in a container image like <code class="docutils literal notranslate"><span class="pre">resolv.conf</span></code>
+can be specified in <code class="docutils literal notranslate"><span class="pre">warewulf.conf</span></code>:</p>
+<div class="admonition note">
+<p class="admonition-title">Note</p>
+<p>Instead of <code class="docutils literal notranslate"><span class="pre">readonly:</span> <span class="pre">true</span></code> you can set <code class="docutils literal notranslate"><span class="pre">copy:</span> <span class="pre">true</span></code>. This causes the
+source file to be copied to the container and removed if it was not
+modified. This can be useful for files used for registrations.</p>
+</div>
 <p>When the command completes, if anything within the container changed,
 the container will be rebuilt into a bootable static object
 automatically.</p>