+
+* The @docker_image@ field can be one of: the Docker repository name (as shown above), the Docker image hash, the Arvados collection UUID, or the Arvados collection portable data hash.
+
+h2. Share Docker images
+
+Docker images are subject to normal Arvados permissions. If wish to share your Docker image with others (or wish to share a pipeline template that uses your Docker image) you will need to use @arv keep docker@ with the @--project-uuid@ option to upload the image to a shared project.
+
+<notextile>
+<pre><code>$ <span class="userinput">arv keep docker --project-uuid qr1hi-j7d0g-xxxxxxxxxxxxxxx arvados/jobs-with-r</span>
+</code></pre>
+</notextile>