Copy files with tar archives

<?php

require __DIR__ . '/vendor/autoload.php';

use Docker\API\Endpoint\ContainerArchive;
use Docker\Docker;

$docker = Docker::create();
$response = $docker->executeRawEndpoint(new ContainerArchive('my-container', [
    'path' => '/etc',
]));
$body = $response->getBody();
$file = null;

try {
    if ($response->getStatusCode() !== 200) {
        throw new RuntimeException('Archive download failed: HTTP '.$response->getStatusCode());
    }
    $file = fopen(__DIR__ . '/container-etc.tar', 'xb');
    if ($file === false) {
        throw new RuntimeException('Could not create the destination archive');
    }
    while (!$body->eof()) {
        $chunk = $body->read(65536);
        while ($chunk !== '') {
            $written = fwrite($file, $chunk);
            if ($written === false || $written === 0) {
                throw new RuntimeException('Could not write the archive');
            }
            $chunk = substr($chunk, $written);
        }
    }
} finally {
    $body->close();
    if (is_resource($file)) {
        fclose($file);
    }
}

use Docker\API\Endpoint\ContainerArchiveInfo;

$response = $docker->executeRawEndpoint(new ContainerArchiveInfo('my-container', [
    'path' => '/etc',
]));
if ($response->getStatusCode() !== 200) {
    throw new RuntimeException('Path lookup failed: HTTP '.$response->getStatusCode());
}
$decoded = base64_decode($response->getHeaderLine('X-Docker-Container-Path-Stat'), true);
if ($decoded === false || $decoded === '') {
    throw new RuntimeException('Missing or invalid path metadata');
}
$metadata = json_decode($decoded, true, 512, JSON_THROW_ON_ERROR);
printf("%s\n", $metadata['name']);

use Docker\API\Endpoint\PutContainerArchive;

$archive = fopen(__DIR__ . '/upload.tar', 'rb');
if ($archive === false) {
    throw new RuntimeException('Could not open the upload archive');
}
$body = null;
try {
    $response = $docker->executeRawEndpoint(new PutContainerArchive(
        'my-container',
        $archive,
        ['path' => '/tmp', 'noOverwriteDirNonDir' => 'true']
    ));
    $body = $response->getBody();
    if ($response->getStatusCode() !== 200) {
        throw new RuntimeException('Archive upload failed: HTTP '.$response->getStatusCode());
    }
} finally {
    $body?->close();
    if (is_resource($archive)) {
        fclose($archive);
    }
}