如何编写一个复杂的composer script来自动化部署？

{
  "scripts": {
    "deploy:precheck": [
      "@php ./scripts/deploy/precheck.php"
    ],
    "deploy:build": [
      "npm run build --cwd=assets",
      "@php ./scripts/deploy/build.php"
    ],
    "deploy:sync": "@php ./scripts/deploy/sync.php",
    "deploy:migrate": "@php ./scripts/deploy/migrate.php",
    "deploy:notify": "@php ./scripts/deploy/notify.php",
    "deploy": [
      "composer run deploy:precheck",
      "composer run deploy:build",
      "composer run deploy:sync",
      "composer run deploy:migrate",
      "composer run deploy:notify"
    ]
  }
}

#!/usr/bin/env php
<?php

// scripts/deploy/precheck.php

$checks = [
    'Git干净' => function() {
        exec('git diff --quiet HEAD');
        return $?
    },
    'PHP语法正确' => function() {
        exec('find . -name "*.php" -not -path "./vendor/*" | xargs php -l', $output, $code);
        return $code === 0;
    },
    '单元测试通过' => function() {
        exec('phpunit --stop-on-failure', $output, $code);
        return $code === 0;
    }
];

foreach ($checks as $name => $check) {
    echo "✅ 正在检查：$name...";
    if ($check()) {
        echo "通过\n";
    } else {
        echo "❌ 失败\n";
        exit(1);
    }
}

// scripts/deploy/sync.php
$host = $_ENV['DEPLOY_HOST'] ?? null;
$key = $_ENV['DEPLOY_SSH_KEY'] ?? '/id_rsa';

if (!$host) {
    echo "错误：未设置 DEPLOY_HOST\n";
    exit(1);
}

exec("rsync -avz -e 'ssh -i $key' ./public/ user@$host:/var/www/html/", $output, $code);
if ($code !== 0) {
    echo "同步失败\n";
    exit(1);
}