$ git clone https://github.com/dwyl/phoenix-chat-example

$ cd !$:t

$ heroku create $APP_NAME

$ rm -rf .git

$ heroku git:remote -a $APP_NAME 

$ echo "erlang_version=20.1
elixir_version=1.6.0
always_rebuild=false
runtime_path=/app
" >> elixir_buildpack.config

$ echo "web: MIX_ENV=prod POOL_SIZE=2 mix ecto.migrate && mix phx.server" >> Procfile

$ vim config/prod.exs
config :chat, ChatWeb.Endpoint,
  load_from_system_env: true,
  url: [scheme: "https", host: "syui-chat.herokuapp.com", port: 443],
  force_ssl: [rewrite_on: [:x_forwarded_proto]],
  cache_static_manifest: "priv/static/cache_manifest.json",
  secret_key_base: Map.fetch!(System.get_env(), "SECRET_KEY_BASE")

$ mix deps.get
$ mix phx.gen.secret
XXX
$ heroku config:set SECRET_KEY_BASE="XXX" -a $APP_NAME
$ heroku addons:create heroku-postgresql:hobby-dev -a $APP_NAME
$ heroku buildpacks:set https://github.com/HashNuke/heroku-buildpack-elixir.git -a $APP_NAME
$ heroku buildpacks:add --index 2 https://github.com/gjaldon/heroku-buildpack-phoenix-static.git -a $APP_NAME

$ echo mix.lock >> .gitignore
$ git add .
$ git commit -m "first"
$ git push heroku master

use Mix.Config

config :pleroma, Pleroma.Web.Endpoint,
 http: [port: {:system, "PORT"}],
  url: [scheme: "https", host: "pleroma.syui.cf", port: 443],
  force_ssl: [rewrite_on: [:x_forwarded_proto]],
  #cache_static_manifest: "priv/static/manifest.json",
  secret_key_base: System.get_env("SECRET_KEY_BASE")

config :logger, level: :info
config :logger, :console, format: "[$level] $message\n"

config :phoenix, :stacktrace_depth, 20

config :pleroma, Pleroma.Repo,
  adapter: Ecto.Adapters.Postgres,
  url: System.get_env("DATABASE_URL"),
  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
  ssl: true

config :pleroma, :media_proxy,
  enabled: true,
  redirect_on_failure: true,
  base_url: "https://syui.gitlab.io/img/pleroma"

$ heroku addons:add process-scheduler -a $APP_NAME
$ heroku addons:create scheduler:standard -a $APP_NAME
$ heroku addons:open process-scheduler -a $APP_NAME
$ heroku addons:open scheduler -a $APP_NAME

# sing up
# example : $ heroku run "mix register_user syui syui [email protected] . password123" -a pleroma
$ heroku run "mix register_user <name> <username> <email> <bio> <password>" -a $APP_NAME

# admin user
$ heroku run "mix set_moderator $USER" -a $APP_NAME

# single user mode
$ vim config/config.exs
+ config :pleroma, :instance, registrations_open: false,
+ config :pleroma, :chat, enabled: false

$ git clone https://git.gnu.io/dansup/gnu-social
$ cd !$:t
$ git checkout composer-autoloading

$ php -v
7.2

$ composer update
error

# これでいけました
$ vim composer.json
{
  "require": {
    "ext-pgsql": "*",
    "ext-gd": "*",
    "ext-intl": "*",
    "php": "^7.2.0",
    "illuminate/contracts": "*",
    "illuminate/support": "*",
    "ramsey/uuid": "^3.0",
    "ezyang/htmlpurifier": "^4.10",
    "psy/psysh": "^0.8.17"
  },
    "scripts": {
      "post-install-cmd": [
      	"chmod 644 config.php"
      ],
      "post-update-cmd": [
      	"chmod 644 config.php"
      ]
    }
}

$ composer update

$ heroku buildpacks:add https://github.com/heroku/heroku-buildpack-php -a $APP_NAME
$ heroku addons:add cleardb:ignite -a  $APP_NAME

# trueとかの部分はいらない
$ heroku config -a $APP_NAME | grep CLEARDB_DATABASE_URL
mysql://username:password@hostname/database

$ rm -rf .git
$ heroku git:remote -a $APP_NAME 
$ git add .
$ git commit -m "first"
$ git push heroku master

$ open -a Google\ Chrome $APP_NAME.herokuapp.com/install.php

$ sudo docker run -p 8000:80 rudism/gnu-social /root/start
$ open -a Google\ Chrome http://localhost:8000/install.php

$ sudo docker ps -q

$ sudo docker cp xxx:/var/www/gnu-social/config.php .
or
$ sudo docker exec xxx /bin/bash
	cat /var/www/gnu-social/config.php
$ sudo docker cp xxx:/var/www/gnu-social/config.php .
or
$ sudo docker commit xxx rudism/gnu-social
$ sudo docker run -it rudism/gnu-social /bin/bash
	cat /var/www/gnu-social/config.php
$ sudo docker ps -q
$ sudo docker cp xxx:/var/www/gnu-social/config.php .

<?php
if (!defined('GNUSOCIAL')) { exit(1); }
$config['site']['name'] = 'gnusocial';
$config['site']['server'] = 'app.herokuapp.com';
$config['site']['path'] = false; 
$config['site']['ssl'] = 'never'; 
$config['db']['database'] = 'mysql://username:password@hostname/database';
$config['db']['type'] = 'mysql';
// Uncomment below for better performance. Just remember you must run
// php scripts/checkschema.php whenever your enabled plugins change!
//$config['db']['schemacheck'] = 'script';

location @rewriteapp {
    # rewrite all to index.php
    rewrite ^(.*)$ /index.php/$1 last;
}

web: vendor/bin/heroku-php-nginx -C nginx_app.conf 

fancy urls = index.php 
ex : /index.php/api/user -> /api/user 
https://github.com/hannesmannerheim/qvitter/issues/256

> nginx_app.conf
location @rewriteapp {
# rewrite all to index.php
rewrite ^(.*)$ /index.php/$1 last;
} 

> Procfile 
-C nginx_app.conf 
https://devcenter.heroku.com/articles/custom-php-settings

<span class="blue"></span>
span.blue {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #61bdcc;
    margin: 0px 5px;
    box-shadow: 0px 0px 10px #61bdcc;
}

<span class="red"></span>
span.red {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #f41b16b0;
    margin: 0px 5px;
    box-shadow: 0px 0px 10px #f41b16;
}