[gnome-runtime-images] flat-manager-client: add ostree

[Abderrahim Kitouni <akitouni src gnome org>]

commit 60072727e1e23a56e6d6200733fdd7f73c8efc8f
Author: Abderrahim Kitouni <akitouni gnome org>
Date:   Fri Jul 19 16:02:39 2019 +0100

    flat-manager-client: add ostree

 flat-manager-client/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flat-manager-client/Dockerfile b/flat-manager-client/Dockerfile
index 2000703..5e0b60e 100644
--- a/flat-manager-client/Dockerfile
+++ b/flat-manager-client/Dockerfile
@@ -4,7 +4,7 @@ VOLUME /build
 WORKDIR /build
 
 RUN dnf -y update && \
-    dnf install -y flatpak python3-gobject python3-requests ostree-libs && \
+    dnf install -y flatpak python3-gobject python3-requests ostree ostree-libs && \
     dnf clean all
 
 RUN curl -o /usr/bin/flat-manager-client \