[ci][docker] Fix deploy to tlcpackstaging on Docker Hub (#12282)

This was previously broken since it wouldn't pick up the new images names and there was an errant `'` floating around

ci/jenkins/Deploy.groovy.j2

@@ -18,8 +18,12 @@ stage('Build packages') {
 
 
 def update_docker(ecr_image, hub_image) {
+  if (ecr_image == null) {
+    sh("image was not rebuilt, skipping")
+    return
+  }
   if (!ecr_image.contains("amazonaws.com")) {
-    sh("echo Skipping '${ecr_image}' since it doesn't look like an ECR image")
+    sh("echo \"Skipping '${ecr_image}' -> '${hub_image}' since it doesn\'t look like an ECR image\"")
     return
   }
   docker_init(ecr_image)
@@ -106,7 +110,7 @@ def deploy() {
             ).trim()
             def tag = "${date_Ymd_HMS}-${upstream_revision.substring(0, 8)}"
             {% for image in images %}
-            update_docker({{ image.name }}, "tlcpackstaging/{{ image.name }}:${tag}")
+            update_docker(built_{{ image.name }}, "tlcpackstaging/{{ image.name }}:${tag}")
             {% endfor %}
           } finally {
             sh(

ci/jenkins/DockerBuild.groovy.j2

@@ -106,7 +106,7 @@ def build_docker_images() {
             // We're purposefully not setting the built image here since they
             // are not yet being uploaded to tlcpack
             // {{ image.name }} = build_image('{{ image.name }}')
-            build_image('{{ image.name }}')
+            built_{{ image.name }} = build_image('{{ image.name }}');
           }
         }
       },

ci/jenkins/Jenkinsfile.j2

@@ -72,6 +72,12 @@ properties([
   ])
 ])
 
+// Placeholders for newly built Docker image names (if rebuild_docker_images
+// is used)
+{% for image in images %}
+  built_{{ image.name }} = null;
+{% endfor %}
+
 // Global variable assigned during Sanity Check that holds the sha1 which should be
 // merged into the PR in all branches.
 upstream_revision = null

ci/jenkins/Prepare.groovy.j2

@@ -180,6 +180,7 @@ def prepare() {
           script: './tests/scripts/git_change_docker.sh',
           label: 'Check for any docker changes',
         )
+
         if (skip_ci) {
           // Don't rebuild when skipping CI
           rebuild_docker_images = false