[tracker-oci-images] Deprecate project before archiving

[Sam Thursfield <sthursfield src gnome org>]

commit 121b3493da9e54cda499173d0d2dc422dc18773a
Author: Sam Thursfield <sam afuera me uk>
Date:   Thu Aug 12 15:54:15 2021 +0200

    Deprecate project before archiving

 README.md | 41 ++++++++++++-----------------------------
 1 file changed, 12 insertions(+), 29 deletions(-)
---
diff --git a/README.md b/README.md
index 63cb235..4011ec2 100644
--- a/README.md
+++ b/README.md
@@ -1,31 +1,14 @@
 # Tracker container images
 
-This repository builds container images suitable for building and testing
-the [Tracker](https://gitlab.gnome.org/GNOME/tracker) and [Tracker
-Miners](https://gitlab.gnome.org/GNOME/tracker-miners) projects.
-
-Images are pushed to this project's [Docker
-registry](https://gitlab.gnome.org/gnome/tracker-oci-images/container_registry)
-automatically when changes are merged to the 'master' branch.
-
-## Using the images in CI
-
-To use these images in a GitLab CI pipeline, set the `image` key in the
-`.gitlab-ci.yml` file to point to one of the images in this project's
-repository:
-
-    image: registry.gitlab.gnome.org/gnome/tracker-oci-images/amd64/fedora:latest
-
-## Using the images locally
-
-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/).
+This repository is obsolete.
+
+It was previously used to build container images suitable for building and
+testing the [Tracker](https://gitlab.gnome.org/GNOME/tracker) and [Tracker
+Miners](https://gitlab.gnome.org/GNOME/tracker-miners) projects, as well
+as [libmediaart](https://gitlab.gnome.org/GNOME/libmediaart/).
+
+All three projects have now migrated to ci-templates:
+[libmediaart](https://gitlab.gnome.org/GNOME/libmediaart/-/merge_requests/13/pipelines),
+[tracker-miners](https://gitlab.gnome.org/GNOME/tracker-miners/-/merge_requests/347)
+and
+[tracker](https://gitlab.gnome.org/GNOME/tracker-miners/-/merge_requests/347).