Volker Rose riddla

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Docker (Mac) De-facto Standard Host Address Alias

This launchd script will ensure that your Docker environment on your Mac will have 10.254.254.254 as an alias on your loopback device (127.0.0.1). The command being run is ifconfig lo0 alias 10.254.254.254.

Once your machine has a well known IP address, your PHP container will then be able to connect to it, specifically XDebug can connect to it at the configured xdebug.remote_host.

Installation Of IP Alias (This survives reboot)

Copy/Paste the following in terminal with sudo (must be root as the target directory is owned by root)...

	First, we need to figure out what the actual error is. This is obviously frustrating given that the error message is intentionally truncating it.

	1) SSH in to your node (various guides available for this if you're not already familiar with this).
	2) Run this command (basically an Elastic Beanstalk wrapper command for npm install I found in a blog post [1]):
	$ sudo /opt/elasticbeanstalk/containerfiles/ebnode.py --action npm-install 2
	3) Find the actual error message in the output from the npm install.

	Once you know the error, it should hopefully be fairly obvious how to fix it. I've run into two different errors over the last couple days on Elastic Beanstalk:

	The first was a dependency that was using the new "^X.Y.Z" version syntax, which is only supported in Node >= v0.10.26 (whereas Elastic Beanstalk only supports up to v0.10.21 as of today). The solution here was easy: hardcode a dependency version prior to when that dependency adopted to the new syntax.

	// breakpoint helpers based on bootstrap's breakpoints

	@mixin xs {
	@media #{screen} and (max-width: #{$screen-xs-max}) {
	@content;
	}
	}

	@mixin sm {
	@media #{screen} and (min-width: #{$screen-sm-min}) and (max-width: #{$screen-sm-max}) {

	<body>
	<div id="⚛️"></div>
	<script src="https://unpkg.com/[email protected]/umd/react.development.js"></script>
	<script src="https://unpkg.com/[email protected]/umd/react-dom.development.js"></script>
	<script src="https://unpkg.com/[email protected]/babel.js"></script>
	<script type="text/babel">
	ReactDOM.render(<div>Hello World!</div>, document.getElementById('⚛️'))
	</script>
	</body>

	version: '2'
	services:
	api:
	volumes:
	- "nfsmount:${CONTAINER_DIR}"

	volumes:
	nfsmount:
	driver: local
	driver_opts:

	<?php

	use PhpCsFixer\Config;
	use PhpCsFixer\Finder;

	$rules = [
	'array_indentation' => true,
	'array_syntax' => ['syntax' => 'short'],
	'binary_operator_spaces' => [
	'default' => 'single_space',

	git clone https://github.com/Homebrew/brew.git
	export PATH=${HOME}/brew/bin:${PATH}