[gnome-runtime-images] ci: Report flatpak repo. content after build

[Jordan Petridis <jpetridis src gnome org>]

commit 5371e563d32365faf0a17ae7f770494105feb11d
Author: Martin Blanchard <tchaik gmx com>
Date:   Sun Mar 3 12:38:36 2019 +0000

    ci: Report flatpak repo. content after build
    
    This makes it easy to know which sha of the org.gnomePlatform and
    org.gnome.Sdk flatpak runtimes were pulled during the build.

 .gitlab-ci.yml | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 874cd38..06ab675 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -23,6 +23,8 @@ stages:
         - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
         - docker build --pull -f ${DOCKERFILE} -t ${IMAGE} .
         - docker push ${IMAGE}
+    after_script:
+        - docker run --rm ${IMAGE} flatpak list --columns=application,branch,arch,active,size
     tags:
         - 'packet'
     only: