add ci image building job

Change-Id: I0ce8e2e1f14d8e09c747336066c3ad0c72a5af4c
Signed-off-by: Sunnatillo <sunnat.samadov@est.tech>
diff --git a/jjb/metal3/projects.yml b/jjb/metal3/projects.yml
index e68c970..f2d76d2 100644
--- a/jjb/metal3/projects.yml
+++ b/jjb/metal3/projects.yml
@@ -53,6 +53,11 @@
     ci_github_repo: 'https://github.com/Nordix/metal3-dev-tools.git'
 
 - project:
+    name: 'image_building'
+    jobs:
+    - ci_image_building
+
+- project:
     name: integration-tests
     org: metal3-io
     proj: