jmdfm

You certainly won't need anything installed other than Docker to create Ruby apps...

1: Generating the project

The idea is to mount the current folder into a temporary Ruby container using the official Ruby image from Docker Hub, then install Rails inside this temporary container, and then create the project skeleton using the rails new command.

# Start bash inside a Ruby container:

jmdfm

// A loading spinner with 6 dots.
// By @marcedwards from @bjango.
// 
// Pretty messy and hacked together, but it works. ¯\_(ツ)_/¯
// Created using Processing 3.3.7.

float scaler = 0.24 * 4; // Scale the entire design.
float scalerb = 4; // Scale the entire design more.
int frame = 0;

jmdfm

!  __  ___ __ ___  ___  ___  _   _ _ __ ___ ___  ___ 
!  \ \/ / '__/ _ \/ __|/ _ \| | | | '__/ __/ _ \/ __|
! _ >  <| | |  __/\__ \ (_) | |_| | | | (_|  __/\__ \
!(_)_/\_\_|  \___||___/\___/ \__,_|_|  \___\___||___/
!                                                    
!## Colors
#define S_base03        #191919
#define S_base02        #073642
#define S_base01        #586e75
#define S_base00        #657b83

jmdfm

Dynamically Add Critical CSS to Your Rails App

Optimizing the delivery of CSS is one way to improve user experience, load speed and SEO of your web app. This involves determining the "critical path CSS" and embeding it into the html of your page. The rest of the CSS for the site is loaded asynchronously so it does not block the rendering of your "above the fold" content. This Gist will show you how to dynamically generate critical path CSS for your Rails app.

In this example we will use the mudbugmedia/critical-path-css gem.

Prerequisites

You will need to set up caching and Active Job in your Rails app. I recommend using a thread-safe background job manager like resque.

jmdfm

#!/bin/bash
#
#DNS adblock/malware block for USG
#
#Orginal script: https://community.ubnt.com/t5/UniFi-Routing-Switching/Use-USG-to-block-sites-apps-like-ER/td-p/1497045
#
#Howto: SSH into your USG:
#sudo su -
#vi /config/user-data/update-adblock-dnsmasq.sh (add file content)
#ESC :wq

jmdfm

Download Plural Sight videos

Software required:

youtube-dl

After installation and putting the youtube-dl in PATH

youtube-dl \

jmdfm

defmodule MyApp.Mixfile do
  use Mix.Project

  def project do
    [app: :my_app,
     version: get_version,
     elixir: "~> 1.0",
     elixirc_paths: elixirc_paths(Mix.env),
     compilers: Mix.compilers,
     build_embedded: Mix.env == :prod,

jmdfm

# Nginx can serve FLV/MP4 files by pseudo-streaming way without any specific media-server software. 
# To do the custom build we use 2 modules: --with-http_secure_link_module --with-http_flv_module
# This module "secure-link" helps you to protect links from stealing away.
#
# NOTE: see more details at coderwall: http://coderwall.com/p/3hksyg

cd /usr/src
wget http://nginx.org/download/nginx-1.5.13.tar.gz
tar xzvf ./nginx-1.5.13.tar.gz && rm -f ./nginx-1.5.13.tar.gz

jmdfm

Keybase proof

I hereby claim:

• I am johnmcdowall on github.
• I am jmdfm (https://keybase.io/jmdfm) on keybase.
• I have a public key whose fingerprint is 8D35 46A9 72BB 8467 6353 A9F9 776E EA02 57AF 8B0F

To claim this, I am signing this object:

jmdfm

IMAGE_CDN = https://apex-inc.imgix.net

# Imgix image replacement.
images:
	@echo "==> pointing images to $(IMAGE_CDN)"
	@find build -type f -name "*.html" | xargs sed -i '' 's|src="/images|src="$(IMAGE_CDN)/images|g'
	@find build -type f -name "*.html" | xargs sed -i '' 's|href="/images|href="$(IMAGE_CDN)/images|g'
.PHONY: images