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Docker - How to cleanup (unused) resources

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

// 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

Install HomeBrew first

brew update
brew tap caskroom/cask
brew install brew-cask

If you get the error "already installed", follow the instructions to unlink it, then install again:

Suppose you're opening an issue and there's a lot noisey logs that may be useful.

Rather than wrecking readability, wrap it in a <details> tag!

<details>
 Summary Goes Here

	# load dynamic modules
	load_module /etc/nginx/modules/ngx_http_geoip_module.so;

	user nginx;
	worker_processes auto;
	error_log /var/log/nginx/error.log info;
	pid /var/run/nginx.pid;
	events { worker_connections 1024; }

	http {

	Ansible playbook to setup HTTPS using Let's encrypt on nginx.

	The Ansible playbook installs everything needed to serve static files from a nginx server over HTTPS.
	The server pass A rating on [SSL Labs](https://www.ssllabs.com/).

	To use:
	1. Install [Ansible](https://www.ansible.com/)
	2. Setup an Ubuntu 16.04 server accessible over ssh
	3. Create `/etc/ansible/hosts` according to template below and change example.com to your domain
	4. Copy the rest of the files to an empty directory (`playbook.yml` in the root of that folder and the rest in the `templates` subfolder)

	# Copyright (c) 2016-2018 Ming Qin (覃明) <https://github.com/QinMing>
	# Open source under MIT LICENSE.

	lazy_load() {
	# Act as a stub to another shell function/command. When first run, it will load the actual function/command then execute it.
	# E.g. This made my zsh load 0.8 seconds faster by loading `nvm` when "nvm", "npm" or "node" is used for the first time
	# $1: space separated list of alias to release after the first load
	# $2: file to source
	# $3: name of the command to run after it's loaded
	# $4+: argv to be passed to $3

	# base requirements
	sudo apt-get update
	sudo apt-get install -y software-properties-common
	sudo apt-get install -y python-setuptools python-dev libffi-dev libssl-dev git sshpass tree
	sudo easy_install pip
	sudo -H pip install cryptography

	# sudo -H pip install ansible==2.1.1.0 if you don't need virtualenv

	# virtualenv

	#!groovy
	import groovy.json.JsonOutput
	import groovy.json.JsonSlurper

	def label = "mypod-${UUID.randomUUID().toString()}"
	podTemplate(label: label, yaml: """
	spec:
	containers:
	- name: mvn
	image: maven:3.3.9-jdk-8

	// ==UserScript==
	// @name Highlight Pokemon in PokeMontpellier.fr
	// @namespace http://tampermonkey.net/
	// @version 0.4
	// @description Add a bouncing animation to the Pokemon species you want
	// @author Err0r404
	// @match https://www.pokemontpellier.fr/
	// @grant none
	// @downloadURL https://gist.githubusercontent.com/Err0r404/7799395b3c34e4d55e64fd33b0342c36/raw/
	// @updateURL https://gist.githubusercontent.com/Err0r404/71c5f4882a4a518e85a1b6ce8b613e67/raw/