From https://once.com/writebook

bin/boot

@@ -0,0 +1,54 @@
+#!/usr/bin/env ruby
+
+require "json"
+require "yaml"
+
+class ProcessMonitor
+  SIGNALS = %w[ INT TERM CLD ]
+
+  def initialize(procfile)
+    @procs = process_list(procfile)
+    handle_signals
+
+    @procs.each &:start
+    @procs.each &:wait
+  end
+
+  private
+    def process_list(procfile)
+      config = YAML.load_file(procfile)
+      config.map { |name, cmd| MonitoredProcess.new(name, cmd) }
+    end
+
+    def handle_signals
+      SIGNALS.each do |signal|
+        Signal.trap(signal) do
+          @procs.each &:terminate
+        end
+      end
+    end
+end
+
+class MonitoredProcess
+  def initialize(name, cmd)
+    @name, @cmd = name, cmd
+  end
+
+  def start
+    @pid = Process.spawn(@cmd)
+  end
+
+  def wait
+    Process.wait @pid
+  rescue Errno::ECHILD
+    nil
+  end
+
+  def terminate
+    Process.kill "TERM", @pid
+  rescue Errno::ESRCH
+    nil
+  end
+end
+
+ProcessMonitor.new("Procfile")

bin/brakeman

@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+require "rubygems"
+require "bundler/setup"
+
+ARGV.unshift("--ensure-latest")
+
+load Gem.bin_path("brakeman", "brakeman")

bin/bundle

@@ -0,0 +1,109 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'bundle' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require "rubygems"
+
+m = Module.new do
+  module_function
+
+  def invoked_as_script?
+    File.expand_path($0) == File.expand_path(__FILE__)
+  end
+
+  def env_var_version
+    ENV["BUNDLER_VERSION"]
+  end
+
+  def cli_arg_version
+    return unless invoked_as_script? # don't want to hijack other binstubs
+    return unless "update".start_with?(ARGV.first || " ") # must be running `bundle update`
+    bundler_version = nil
+    update_index = nil
+    ARGV.each_with_index do |a, i|
+      if update_index && update_index.succ == i && a.match?(Gem::Version::ANCHORED_VERSION_PATTERN)
+        bundler_version = a
+      end
+      next unless a =~ /\A--bundler(?:[= ](#{Gem::Version::VERSION_PATTERN}))?\z/
+      bundler_version = $1
+      update_index = i
+    end
+    bundler_version
+  end
+
+  def gemfile
+    gemfile = ENV["BUNDLE_GEMFILE"]
+    return gemfile if gemfile && !gemfile.empty?
+
+    File.expand_path("../Gemfile", __dir__)
+  end
+
+  def lockfile
+    lockfile =
+      case File.basename(gemfile)
+      when "gems.rb" then gemfile.sub(/\.rb$/, ".locked")
+      else "#{gemfile}.lock"
+      end
+    File.expand_path(lockfile)
+  end
+
+  def lockfile_version
+    return unless File.file?(lockfile)
+    lockfile_contents = File.read(lockfile)
+    return unless lockfile_contents =~ /\n\nBUNDLED WITH\n\s{2,}(#{Gem::Version::VERSION_PATTERN})\n/
+    Regexp.last_match(1)
+  end
+
+  def bundler_requirement
+    @bundler_requirement ||=
+      env_var_version ||
+      cli_arg_version ||
+      bundler_requirement_for(lockfile_version)
+  end
+
+  def bundler_requirement_for(version)
+    return "#{Gem::Requirement.default}.a" unless version
+
+    bundler_gem_version = Gem::Version.new(version)
+
+    bundler_gem_version.approximate_recommendation
+  end
+
+  def load_bundler!
+    ENV["BUNDLE_GEMFILE"] ||= gemfile
+
+    activate_bundler
+  end
+
+  def activate_bundler
+    gem_error = activation_error_handling do
+      gem "bundler", bundler_requirement
+    end
+    return if gem_error.nil?
+    require_error = activation_error_handling do
+      require "bundler/version"
+    end
+    return if require_error.nil? && Gem::Requirement.new(bundler_requirement).satisfied_by?(Gem::Version.new(Bundler::VERSION))
+    warn "Activating bundler (#{bundler_requirement}) failed:\n#{gem_error.message}\n\nTo install the version of bundler this project requires, run `gem install bundler -v '#{bundler_requirement}'`"
+    exit 42
+  end
+
+  def activation_error_handling
+    yield
+    nil
+  rescue StandardError, LoadError => e
+    e
+  end
+end
+
+m.load_bundler!
+
+if m.invoked_as_script?
+  load Gem.bin_path("bundler", "bundle")
+end

bin/docker-entrypoint

@@ -0,0 +1,8 @@
+#!/bin/bash -e
+
+# Enable jemalloc for reduced memory usage and latency.
+if [ -f /usr/lib/*/libjemalloc.so.2 ]; then
+  export LD_PRELOAD="$(echo /usr/lib/*/libjemalloc.so.2) $LD_PRELOAD"
+fi
+
+exec "${@}"

bin/importmap

@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+
+require_relative "../config/application"
+require "importmap/commands"

bin/rails

@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+APP_PATH = File.expand_path("../config/application", __dir__)
+require_relative "../config/boot"
+require "rails/commands"

bin/rake

@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+require_relative "../config/boot"
+require "rake"
+Rake.application.run

bin/rubocop

@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+require "rubygems"
+require "bundler/setup"
+
+# explicit rubocop config increases performance slightly while avoiding config confusion.
+ARGV.unshift("--config", File.expand_path("../.rubocop.yml", __dir__))
+
+load Gem.bin_path("rubocop", "rubocop")

bin/setup

@@ -0,0 +1,28 @@
+#!/usr/bin/env ruby
+require "fileutils"
+
+APP_ROOT = File.expand_path("..", __dir__)
+APP_NAME = "writebook"
+
+def system!(*args)
+  system(*args, exception: true)
+end
+
+FileUtils.chdir APP_ROOT do
+  puts "== Installing dependencies =="
+  system! "gem install bundler --conservative"
+  system!("bundle install")
+
+  puts "\n== Preparing database =="
+  system! "bin/rails db:prepare"
+
+  puts "\n== Removing old logs and tempfiles =="
+  system! "bin/rails log:clear tmp:clear"
+
+  puts "\n== Restarting application server =="
+  system! "bin/rails restart"
+
+  puts "\n== Configuring puma-dev =="
+  system "ln -nfs #{APP_ROOT} ~/.puma-dev/#{APP_NAME}"
+  system "curl -Is https://#{APP_NAME}.test/up | head -n 1"
+end

bin/start-app

@@ -0,0 +1,5 @@
+#!/bin/bash -e
+
+rm -f tmp/pids/server.pid
+./bin/rails db:prepare
+./bin/rails server