Fix metal3 container image job triggers

Change-Id: I5db7a87c24ef8147bd82440540b1cc528a98ee22
diff --git a/jjb/metal3/projects.yml b/jjb/metal3/projects.yml
index 3f1acdd..5a867d6 100644
--- a/jjb/metal3/projects.yml
+++ b/jjb/metal3/projects.yml
@@ -708,6 +708,8 @@
         - vbmc:
             repo: https://github.com/metal3-io/ironic-image.git
             dockerfile_location: /resources/vbmc/
+    jobs:
+        - container_image_building
     ci_github_jenkins_credentials_id: 'nordix-metal3-ci-github-prod-token'
     ci_ghprb_auth_id: 'e8a43847-46ff-42db-a5db-7366df0e4ee2'
     ci_github_repo: 'https://github.com/Nordix/metal3-dev-tools.git'