[gnome-nightly-oci] Initial README

[Jordan Petridis <jpetridis src gnome org>]

commit 3f6c507a3e79af55a37b42c31f3d902069469f07
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Fri Apr 27 18:27:10 2018 +0000

    Initial README

 README.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
---
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7d0adc3
--- /dev/null
+++ b/README.md
@@ -0,0 +1,18 @@
+# Container images with the GNOME nightly runtime
+
+This repo contains the docker files used to build the container images that are used
+to build Flatpak packages in the gtilab-CI.
+
+The base image contains `flatpak`, `flatpak-builder` along with all their dependancies.
+It also contains `git` and `xvfb` since they are quite common packages and used in the CI
+config of most GNOME apps.
+
+It's possible to add images with various sdk bundles too. Currenlty there is only the `rust-bundle`
+image which uses the `nightly:master` fot it's base and also contains the [FreeDesktop Rust Sdk 
Extensions][rust].
+
+## Adding more sdk-bundles
+
+TBA
+
+
+[rust]: https://github.com/flathub/org.freedesktop.Sdk.Extension.rust-stable