[tracker-oci-images] Show image sizes after building

[Sam Thursfield <sthursfield src gnome org>]

commit 4c61a7c004ac1ce852fab8743db1cb36f2a1f27e
Author: Sam Thursfield <sam afuera me uk>
Date:   Sun Mar 29 13:59:44 2020 +0200

    Show image sizes after building
    
    This helps us notice if we accidentally pull a huge package into
    one of the images.

 .gitlab-ci.yml | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5e19959..c88ae4d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,6 +22,9 @@ variables:
 
     - podman build --cgroup-manager=cgroupfs --format=docker --pull -f ${DOCKERFILE} -t ${IMAGE} 
${CONTEXT_DIR}
 
+    # Show image size.
+    - podman image list
+
     - |
       if [ "$CI_COMMIT_REF_NAME" = "master" ]; then
           podman push --creds $CI_REGISTRY_USER:$CI_REGISTRY_PASSWORD ${IMAGE}