[tracker-oci-images] README.md: Add 'related projects' section

[Sam Thursfield <sthursfield src gnome org>]

commit cf1c9e4bb6c2a1871cdb10f47adade3f0a8893d2
Author: Sam Thursfield <sam afuera me uk>
Date:   Fri Jun 19 00:11:04 2020 +0200

    README.md: Add 'related projects' section

 README.md | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/README.md b/README.md
index e6c45df..63cb235 100644
--- a/README.md
+++ b/README.md
@@ -22,3 +22,10 @@ You can also try out images on your local machine. Here is an example which
 opens a shell inside a Docker container:
 
     docker run -i -t registry.gitlab.gnome.org/gnome/tracker-oci-images/amd64/fedora:latest /bin/bash
+
+# Related projects
+
+[librsvg-oci-images](https://gitlab.gnome.org/GNOME/tracker/-/issues/218), on which this project is based.
+
+[Freedesktop CI Templates](https://freedesktop.pages.freedesktop.org/ci-templates/templates.html), a
+system for building base CI images on [gitlab.freedesktop.org](https://gitlab.freedesktop.org/).