Add job to create docker images for prometheus

Change-Id: I8ee4e4b9d6dd4b9d37ed2368f3c7843c21fc90d2
diff --git a/jenkins/client/job/docker/build-images.yml b/jenkins/client/job/docker/build-images.yml
index e9e7447..084835c 100644
--- a/jenkins/client/job/docker/build-images.yml
+++ b/jenkins/client/job/docker/build-images.yml
@@ -7,6 +7,7 @@
           jobs:
             - name: aptly
             - name: ci
+            - name: prometheus
           template:
             discard:
               build: