[DNM] test zuul/nodepool-builder:siblings not found

Change-Id: Ie265aae6b98c1d1fa9fab085bcd46fb6b9bc43d7
Signed-off-by: Maksim Malchuk <maksim.malchuk@gmail.com>

.zuul.yaml

@@ -138,6 +138,7 @@
     provides: nodepool-siblings-container-image
     vars:
       zuul_work_dir: "{{ zuul.projects['opendev.org/zuul/nodepool'].src_dir }}"
+      container_command: docker --debug
       container_images:
         - context: .
           registry: quay.io

playbooks/nodepool-functional-container-openstack/run.yaml

@@ -94,7 +94,11 @@
 
     - name: Run docker compose pull
       shell:
-        cmd: docker-compose pull
+        cmd: |-
+          set -x
+          docker image ls
+          docker-compose --verbose pull
+          docker image ls
         chdir: /etc/nodepool
 
     - name: Run docker compose up