Brien Wankel brienw

Keybase proof

I hereby claim:

I am brienw on github.
I am br13n (https://keybase.io/br13n) on keybase.
I have a public key whose fingerprint is 8414 1E59 A860 651C B3BA 5615 4EC4 FC71 D048 6528

To claim this, I am signing this object:

Deploying Elixir and Phoenix applications using Docker and Exrm

Goal

By the end of this quick guide, you will know how to compile a Phoenix app release using Exrm and run it inside a Docker container. I've found only a couple of articles that discuss getting an Elixir app up and running inside a Docker container, and even those only touched on some parts of the process. The idea is that this guide will give you a full end-to-end example of how to get all the pieces and parts working together so that you are able to deploy your Phoenix application inside a Docker container.

Assumptions

You already have a working Elixir environment with the Phoenix Framework installed
You have at least basic working knowledge of Docker, and have installed the Docker tools onto your local environment

can0 setup

(for mcp2515 controller like the PiCAN2)

fork (or clone) nerves_system_rpi3 locally into the parent directory of your project

edit mix.exs and change the nerves_system_rpi3 lines to point to your local one:

 def system("rpi3"), do: [{:nerves_system_rpi3, path: "../nerves_system_rpi3", runtime: false}]

mix deps.get
mkdir config/rpi3 to set up a place to store some customized rpi configs

	#!/usr/bin/env ruby

	# Complete rake tasks script for bash
	# Save it somewhere and then add
	# complete -C path/to/script -o default rake
	# to your ~/.bashrc
	# Xavier Shay (http://rhnh.net), combining work from
	# Francis Hwang ( http://fhwang.net/ ) - http://fhwang.net/rb/rake-complete.rb
	# Nicholas Seckar <[email protected]> - http://www.webtypes.com/2006/03/31/rake-completion-script-that-handles-namespaces
	# Saimon Moore <[email protected]>

	#!/bin/bash
	echo ECS_CLUSTER=your_ecs_cluser_name > /etc/ecs/ecs.config

	INSTANCE=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)

	hostname $INSTANCE
	sed -i.bak "s/\\(HOSTNAME=\\).*/\\1$INSTANCE/" /etc/sysconfig/network

	# https://aws.amazon.com/blogs/compute/using-amazon-efs-to-persist-data-from-amazon-ecs-containers/
	yum -y install jq

	#!/bin/bash

	export MIX_ENV=${MIX_ENV:-prod}

	if [ -f /.dockerenv ]; then
	# We are inside a docker container, so lets build a release
	if [ -n "${APP_NAME:+set}" ]; then
	echo ">>> BUILDING $APP_NAME <<<"
	mix release --env=$MIX_ENV --name=$APP_NAME
	else