fix:step names too long

build.libsonnet

@@ -58,4 +58,12 @@ function(config)
       steps:[
         build(config)(buildSecrets),
       ],
+    } {
+    trigger +: {
+      event +: [
+        'promote',
+      ],
+      target +: [
+        'build',
+      ],
     }

registry.libsonnet

@@ -53,7 +53,7 @@ function(config)
     steps:
       std.map(
         function(def) images(config).docker {
-          name: def.load,
+          name: def.save,
           environment +: environment
             .environmentSecrets(config.secrets),
           volumes: [