move docker-image from soyuz to dragon

Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>

playbooks/dragon.yml

@@ -15,3 +15,4 @@
     - { role: sogrep, tags: ['sogrep'] }
     - { role: archbuild, tags: ['archbuild'] }
     - { role: arch-boxes, tags: ['arch-boxes'] }
+    - { role: docker-image }