Capfile

require 'capistrano/setup'
require 'capistrano/deploy'
require "capistrano/scm/git" #If using 3.9.0
install_plugin Capistrano::SCM::Git #If using 3.9.0

myproject.rb

server "1.2.3.4.5", user: "deploy", roles: %w{app web}


# Set some defaults
set :repo_url, "git@github.com:myproject.git"
set :application, "myproject"
set :branch, "master"
set :scm, :git #If using Capistrano 3.5.0 or 3.4.0. 
set :format, :pretty
set :log_level, 'any'
set :pty, false
set :keep_releases, 2

# Target roles
set :target_roles, %w(web)

set :linked_dirs, %w(node_modules)

# Include only the build artifact
set :include_dir, 'dist'

# Build
if fetch(:stage) == "production" then
  set :deploy_to, -> { "/var/www/html/production" }
  set :npm_env_variables, { API_URL: "https://api.mysite.com.br" }
else
  set :deploy_to, -> { "/var/www/html/staging" }
  set :npm_env_variables, { API_URL: "https://stg.api.mysite.com.br" }
end

namespace :deploy do
  desc 'Install node modules'
  task :install_node_modules do
    on roles(:web) do
      within release_path do
        execute :npm, 'install', '-s'
      end
    end
  end

  desc 'Restart application'
  task :restart do
    on roles(:web) do
      sudo :service, fetch(:application), 'restart'
    end
  end

  after :updated, :install_node_modules
  after :publishing, :restart
end