From ede4d520546520a58540b5b1919b6b33da211d1c Mon Sep 17 00:00:00 2001
From: Micah Abbott <miabbott@redhat.com>
Date: Thu, 27 Sep 2018 11:09:02 -0400
Subject: [PATCH] treecompose: detect if `buildmaster` exists on registry

To bootstrap the change to `buildmaster`, we need to do a quick test
if the tag exists on the registry.  If it exists, we can pull from it,
otherwise we need to use `latest`
---
 Jenkinsfile.treecompose | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Jenkinsfile.treecompose b/Jenkinsfile.treecompose
index 680000d9..a6293797 100644
--- a/Jenkinsfile.treecompose
+++ b/Jenkinsfile.treecompose
@@ -36,7 +36,15 @@ node(NODE) {
             withCredentials([
                 usernameColonPassword(credentialsId: params.REGISTRY_CREDENTIALS, variable: 'CREDS'),
             ]) {
-                sh """./scripts/pull-mount-oscontainer ${API_CI_REGISTRY} ${treecompose_workdir} ${OSCONTAINER_IMG}"""
+                def (registryUser, registryPass) = "${CREDS}".split(':')
+                utils.registry_login(registryUser, registryPass, "${API_CI_REGISTRY}")
+                sh """
+                    if ! skopeo inspect docker://${OSCONTAINER_IMG}:buildmaster; then
+                        ./scripts/pull-mount-oscontainer ${API_CI_REGISTRY} ${treecompose_workdir} ${OSCONTAINER_IMG}:latest
+                    else
+                        ./scripts/pull-mount-oscontainer ${API_CI_REGISTRY} ${treecompose_workdir} ${OSCONTAINER_IMG}:buildmaster
+                    fi
+                """
             }
         }