WP playground blueprint - Script Modules data sharing

blueprint.json

{
  "$schema": "https://playground.wordpress.net/blueprint-schema.json",
  "landingPage": "/",
  "phpExtensionBundles": [
    "kitchen-sink"
  ],
  "steps": [
    {
      "step": "mkdir",
      "path": "/wordpress-new"
    },
    {
      "step": "writeFile",
      "path": "/tmp/pr.zip",
      "data": {
        "resource": "url",
        "url": "/plugin-proxy.php?org=WordPress&repo=wordpress-develop&workflow=Test Build Processes&artifact=wordpress-build-6433&pr=6433",
        "caption": "Downloading WordPress PR 6433"
      }
    },
    {
      "step": "unzip",
      "zipPath": "/tmp/pr.zip",
      "extractToPath": "/tmp"
    },
    {
      "step": "rm",
      "path": "/tmp/pr.zip"
    },
    {
      "step": "importWordPressFiles",
      "wordPressFilesZip": {
        "resource": "vfs",
        "path": "/tmp/wordpress.zip"
      },
      "pathInZip": "/build",
      "progress": {
        "weight": 20,
        "caption": "Applying WordPress PR 6433"
      }
    },
    {
      "step": "runPHP",
      "code": "<?php\n$_GET['step'] = 'upgrade_db';\nrequire '/wordpress/wp-admin/upgrade.php';"
    },
    {
      "step": "login",
      "username": "admin",
      "password": "password"
    },
    {
      "step": "mkdir",
      "path": "/wordpress/pr"
    },
    {
      "step": "writeFile",
      "path": "/wordpress/pr/pr.zip",
      "data": {
        "resource": "url",
        "url": "/plugin-proxy.php?org=WordPress&repo=gutenberg&workflow=Build Gutenberg Plugin Zip&artifact=gutenberg-plugin&pr=60952",
        "caption": "Downloading Gutenberg PR 60952"
      },
      "progress": {
        "weight": 2,
        "caption": "Applying Gutenberg PR 60952"
      }
    },
    {
      "step": "unzip",
      "zipPath": "/wordpress/pr/pr.zip",
      "extractToPath": "/wordpress/pr"
    },
    {
      "step": "installPlugin",
      "pluginZipFile": {
        "resource": "vfs",
        "path": "/wordpress/pr/gutenberg.zip"
      }
    }
  ]
}