Как сделать деплой Rails APi, с Nginx и Puma?

oh_shi,
После выполнения этой команды # cap production deploy:initial

Выдает вот такую ошибку

(Backtrace restricted to imported tasks)
cap aborted!
NameError: undefined local variable or method `user' for main:Object

Tasks: TOP => production
(See full trace by running task with --trace)

Capfile:

# Capfile
require 'capistrano/setup'
require 'capistrano/deploy'

require 'capistrano/rvm'
require 'capistrano/bundler'
require 'capistrano/puma'
require 'capistrano/rails/migrations' 
require 'capistrano/rails'
require 'capistrano/scm/git'

install_plugin Capistrano::SCM::Git
install_plugin Capistrano::Puma
set :rvm_type, :user
Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }

deploy.rb:

# config/deploy.rb
# config valid for current version and patch releases of Capistrano
lock "~> 3.10.0"

set :application, -> {'phonebook-api'}
set :repo_url, '.'

set :user, 'semenvr' #ssh auth username
set :rvm_ruby_version, 'ruby-2.4.2'

set :tmp_dir, "/home/#{user}/#{application}/tmp"
ask :branch, proc { `git rev-parse --abbrev-ref HEAD`.chomp }

set :puma_threads,    [4, 6]
set :puma_workers,    2

set :pty, true
set :use_sudo, false
set :stage, -> {:production} # по умолчанию production
set :deploy_via, :remote_cache
set :deploy_to, -> {"/home/#{user}/#{application}"}
set :puma_bind, -> {"unix:///home/#{user}/#{application}/tmp/sockets/puma.sock"}
set :puma_state, -> {"/home/#{user}/#{application}/tmp/pids/puma.state"}
set :puma_pid, -> {"/home/#{user}/#{application}/tmp/pids/puma.pid"}
set :puma_access_log, -> {"#{release_path}/log/puma.error.log"}
set :puma_error_log, ->  {"#{release_path}/log/puma.access.log"}
set :ssh_options,  { forward_agent: true, user: fetch(:user), keys: %w(~/.ssh/id_rsa.pub) }
set :puma_preload_app, true
set :puma_worker_timeout, nil
set :puma_init_active_record, true  # Change to false when not using ActiveRecord
set :nginx_use_ssl, false


set :log_level,     :debug
set :keep_releases, 3

## Linked Files & Directories (Default None):
set :linked_files, %w{config/database.yml config/secrets.yml}
set :linked_dirs,  %w{log tmp public/uploads}

nginx.conf:

upstream puma {
  server unix:///home/semenvr/phonebook-api/tmp/sockets/puma.sock;
}


server {
  listen 80;

  root /home/semenvr/phonebook-api/public;
  access_log /home/semenvr/phonebook-api/log/nginx.access.log;
  error_log /home/semenvr/phonebook-api/log/nginx.error.log info;


  try_files $uri/index.html $uri @puma;
  location @puma {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_pass http://puma;
  }

  client_max_body_size 50M;
  keepalive_timeout 10;
}

deploy.rake:

namespace :puma do
  desc 
  task :make_dirs do
    on roles(:app) do
      execute "mkdir #{shared_path}/tmp/sockets -p"
      execute "mkdir #{shared_path}/tmp/pids -p"
    end
  end

  before :start, :make_dirs
end

namespace :deploy do
  desc 
  task :copy_config do
    on release_roles :app do |role|
      fetch(:linked_files).each do |linked_file|
        user = role.user ? role.user + '@' : nil
        hostname = role.hostname
        linked_files(shared_path).each do |file|
          run_locally do
            execute :rsync, "config/#{file.to_s.gsub(/.*\/(.*)$/,"\\1")}", "#{user}#{hostname}:#{file.to_s.gsub(/(.*)\/[^\/]*$/, "\\1")}/"
          end
        end unless user.nil?
      end
    end
  end

  desc 
  task :check_revision do
    on roles(:app) do
      unless `git rev-parse HEAD` == `git rev-parse origin/master`
        puts 'WARNING: HEAD is not the same as origin/master'
        puts 'Run `git push` to sync changes.'
        exit
      end
    end
  end

  desc 
  task :initial do
    on roles(:app) do
      before 'deploy:restart', 'puma:start'
      invoke 'deploy'
    end
  end

  desc 
  task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      invoke 'puma:restart'
    end
  end

  before :starting,     :check_revision
  before 'deploy:check:linked_files', 'deploy:copy_config'
 # after  :finishing,    :compile_assets # закомментируйте эту строчку если используете Rails API
  after  :finishing,    :cleanup
  after  :finishing,    :restart
end

Как сделать деплой Rails APi, с Nginx и Puma?

oh_shi, Я сделал вот по обычному деплою Rails (fsdev.blog/2017/11/5-how-to-make-deploy-ror-with-p... и не работает

Как сделать деплой Rails APi, с Nginx и Puma?

oh_shi, например это:

location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }