+<pre><code>
+~$ <span class="userinput"> ./build.sh --help</span>
+
+usage: ./build.sh [options]
+
+Calling ./build.sh without arguments will build all Arvados docker images
+
+./build.sh options:
+ -h, --help Print this help text
+ clean Clear all build information
+ realclean clean and remove all Arvados Docker images except arvados/debian
+ deepclean realclean and remove arvados/debian, crosbymichael/skydns and
+ crosbymichael/skydns Docker images
+</code></pre></notextile>
+
+If there has been an update to the Arvados Docker building code, it is safest to rebuild the Arvados Docker images from scratch. All build information can be cleared with the 'clean' option to build.sh:
+
+<notextile>
+<pre><code>~$ <span class="userinput">./build.sh clean</span></code></pre>