Move to .post so that the idp_ci image gets built

Author: vrajmohan

.gitlab-ci.yml

@@ -748,10 +748,11 @@ deploy_eks:
     - if: $CI_COMMIT_BRANCH == "main"
 
 publish_er_diagram:
-  stage: .pre # TODO - change to .post
+  stage: .post
   rules:
     - if: $CI_COMMIT_BRANCH == "main"
     - if: $CI_COMMIT_BRANCH == "vm-reinstate-erd"
+  image: '${ECR_REGISTRY}/idp/ci@${CI_COMMIT_SHA}'
   variables:
     RAILS_ENV: test
   script: