Ciaran McNulty ciaranmcnulty

Docker for Mac

On M1 machines, Docker for Mac is running a lightweight linux ARM VM, then running containers within that, so containers are essentially running natively. Don't be fooled by the fact the UI or binary CLI tools (e.g. docker) might require Rosetta.

Within that VM is an emulation layer called QEmu. This can be used by docker to run Intel containers. This does not use Rosetta at all, and has a roughly 5-6X performance penalty. (If you just upgraded your CPU this may result in a similar performance to your old machine!)

Pulling and running with Docker

Many images in public registries are multi-architecture. For instance at the time of writing on Docker Hub the php:8.0-cli image has the following digests:

Keybase proof

I hereby claim:

I am ciaranmcnulty on github.
I am ciaranmcnulty (https://keybase.io/ciaranmcnulty) on keybase.
I have a public key whose fingerprint is 72E8 8A58 A8B5 0C9C 3778 3FE1 1BFD AD86 0DC6 FB3B

To claim this, I am signing this object:

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

	$usage = <<<USAGE
	Usage:
	./cot-statement-fixer starting-balance filename.csv

	USAGE;

	if (count($argv)!==3){

	FROM php:7.2.10-fpm-alpine3.8 AS base

	# Stuff needed in all layers
	RUN apk add --no-cache gettext fcgi icu-dev
	RUN docker-php-ext-install bcmath

	FROM base AS dependencies

	COPY --from=composer:1.7 /usr/bin/composer /usr/bin/composer
	COPY composer.json /app/composer.json

	<?php

	class DoctrineUserRepositoryTest extends UserRepositoryTest
	{
	public function setUp()
	{
	// do something to bootstrap doctrine and set up DB fixtures
	$this->userRepository = new DoctrineRepository(/* lots of dependencies */);
	}

	default:
	suites:
	foo:
	paths: [ %paths.base%/app/modules/fooModule/features ]
	contexts: [ Some\Autoloadable\Foo\FeatureContext ]
	bar:
	paths: [ %paths.base%/app/modules/barModule/features ]
	contexts: [ Some\Autoloadable\Bar\FeatureContext ]

	<?php

	namespace spec\League\Event;

	use Interop\Container\ContainerInterface;
	use Interop\Container\Exception\ContainerException;
	use League\Event\EventInterface;
	use League\Event\ListenerInterface;
	use PhpSpec\ObjectBehavior;
	use Prophecy\Argument;

	<?php

	class NamedSpec extends ObjectBehavior
	{
	function it_exposes_the_name_it_is_constructed_with()
	{
	$this->beConstructedNamed('Foo');

	$this->getName()->shouldReturn('Foo');
	}

	VAGRANTFILE_API_VERSION = "2"

	Vagrant.configure(VAGRANTFILE_API_VERSION) do \|config\|
	config.vm.box = "precise64"
	config.vm.box_url = "http://files.vagrantup.com/precise64.box"

	config.vm.provider :virtualbox do \|vb\|
	vb.name = "HHVM"
	vb.customize ["modifyvm", :id, "--memory", "2048"]
	vb.customize ["modifyvm", :id, "--ostype", "Ubuntu_64"]

	<?php

	$extensions = file_get_contents('https://raw.githubusercontent.com/phpspec/phpspec/master/docs/cookbook/extensions.rst');

	$tmp = tempnam(sys_get_temp_dir(), 'extension-checker');
	unlink($tmp); mkdir($tmp); chdir($tmp);

	if (preg_match_all('/[<](?<url>http.*)[>]/', $extensions, $matches)) {
	foreach ($matches['url'] as $url) {
	passthru('git clone ' . escapeshellarg($url));