Bartłomiej Krukowski bkrukowski

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

Auto-deploying built products to gh-pages with Travis

This is a set up for projects which want to check in only their source files, but have their gh-pages branch automatically updated with some compiled output every time they push.

Create a compile script

You want a script that does a local compile to e.g. an out/ directory. Let's call this compile.sh for our purposes, but for your project it might be npm build or gulp make-docs or anything similar.

The out/ directory should contain everything you want deployed to gh-pages. That almost always includes an index.html.

Installing Docker CE on Ubuntu 17.10 Artful Aardvark

As of 20/10/2017, a release file for Ubuntu 17.10 Artful Aardvark is not available on Download Docker.

If you are used to installing Docker to your development machine with get-docker script, that won't work either. So the solution is to install Docker CE from the zesty package.

sudo apt-get update
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	package main

	import (
	"fmt"
	"reflect"
	)

	type Test struct {
	Name string
	}

	<?php

	function defer(&$ctx, callable $callable): void
	{
	$ctx[] = new class($callable)
	{
	private $callable;

	public function __construct(callable $callable)
	{

	<?php

	class MedianData
	{
	private $data = [];

	private $count = 0;

	public function count(): int
	{

	<?php
	function flattenExceptionBacktrace(\Exception $exception) {
	$traceProperty = (new \ReflectionClass('Exception'))->getProperty('trace');
	$traceProperty->setAccessible(true);

	$flatten = function(&$value, $key) {
	if ($value instanceof \Closure) {
	$closureReflection = new \ReflectionFunction($value);
	$value = sprintf(
	'(Closure at %s:%s)',

	# Install linux update, followed by GCC and Make
	sudo yum -y update
	sudo yum install -y gcc make

	# Install Nginx and PHP-FPM
	sudo yum install -y nginx php-fpm

	# Install PHP extensions
	sudo yum install -y php-devel php-mysql php-pdo \
	php-pear php-mbstring php-cli php-odbc \

	###Download XCode from the App Store
	Get it from [here](https://itunes.apple.com/en/app/xcode/id497799835?mt=12)

	###Get cmake
	Use/get a package manager, such as [homebrew](http://brew.sh/).
	Open a terminal window and type the following
	```
	brew install cmake
	```
	This will get the required packages for cmake.