build(nodejs_mono_repo): automatically tag with infrastructure-public-image- prefix (#2170)

Uses the BUILD_ID in case of a rebuild from the same commit SHA

Author: chingor13

docker/owlbot/nodejs_mono_repo/cloudbuild.yaml

@@ -20,11 +20,13 @@ steps:
       '-t', 'gcr.io/repo-automation-bots/owlbot-nodejs-mono-repo:$SHORT_SHA',
       '-t', 'gcr.io/repo-automation-bots/owlbot-nodejs-mono-repo:latest',
       '-t', 'gcr.io/cloud-devrel-public-resources/owlbot-nodejs-mono-repo:$SHORT_SHA',
+      '-t', 'gcr.io/cloud-devrel-public-resources/owlbot-nodejs-mono-repo:infrastructure-public-image-$BUILD_ID',
       '-t', 'gcr.io/cloud-devrel-public-resources/owlbot-nodejs-mono-repo:latest',
       '-f', 'docker/owlbot/nodejs_mono_repo/Dockerfile', '.' ]
 # Push the docker image.
 images:
   - gcr.io/repo-automation-bots/owlbot-nodejs-mono-repo:$SHORT_SHA
   - gcr.io/repo-automation-bots/owlbot-nodejs-mono-repo:latest
   - gcr.io/cloud-devrel-public-resources/owlbot-nodejs-mono-repo:$SHORT_SHA
+  - gcr.io/cloud-devrel-public-resources/owlbot-nodejs-mono-repo:infrastructure-public-image-$BUILD_ID
   - gcr.io/cloud-devrel-public-resources/owlbot-nodejs-mono-repo:latest