backup:setup requires sudo

[ConfusedVorlon]

I'm using rvm capistrano 3.8 and rails 5.0

backup:setup gives me a series of errors requiring sudo access

the fix for me was to blindly copy the bundle command from capistrano/bundler

  task :setup do
    on primary :web do
      backup_dir = "#{current_path}/#{fetch(:backup_path, 'backup')}"
      within backup_dir do
        with fetch(:bundle_env_variables, {}) do
          # execute :bundle
          options = []
          options << "--gemfile #{fetch(:bundle_gemfile)}" if fetch(:bundle_gemfile)
          options << "--path #{fetch(:bundle_path)}" if fetch(:bundle_path)
          unless test(:bundle, :check, *options)
            options << "--binstubs #{fetch(:bundle_binstubs)}" if fetch(:bundle_binstubs)
            options << "--jobs #{fetch(:bundle_jobs)}" if fetch(:bundle_jobs)
            options << "--without #{fetch(:bundle_without)}" if fetch(:bundle_without)
            options << "#{fetch(:bundle_flags)}" if fetch(:bundle_flags)
            execute :bundle, :install, *options
          end
        end
      end
    end
  end

I also needed to trigger this on

after 'deploy', 'backup:setup'

as the gems were lost on every deploy.