Command output

<?php

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

use Docker\API\Model\ContainersIdExecPostBody;
use Docker\API\Model\ExecIdStartPostBody;
use Docker\Docker;

$docker = Docker::create();

$command = new ContainersIdExecPostBody();
$command->setCmd(['sh', '-c', 'printf "hello\n"']);
$command->setAttachStdout(true);
$command->setAttachStderr(true);
$command->setTty(false);

$exec = $docker->containerExec('my-container', $command);

$start = new ExecIdStartPostBody();
$start->setDetach(false);
$start->setTty(false);

$output = $docker->execStart($exec->getId(), $start);
$output->onStdout(function (string $chunk): void {
    echo $chunk;
});
$output->onStderr(function (string $chunk): void {
    fwrite(STDERR, $chunk);
});
$output->wait();

$result = $docker->execInspect($exec->getId());
if ($result->getRunning() !== false) {
    throw new RuntimeException('The command has not finished yet');
}
$exitCode = $result->getExitCode();
if ($exitCode === null) {
    throw new RuntimeException('No exit status was returned');
}
if ($exitCode !== 0) {
    throw new RuntimeException('The command failed with exit status '.$exitCode);
}