class Gitlab::QA::Docker::Shellout

def execute!
  raise StatusError, 'Command already executed' if @output.any?
  Open3.popen2e(@command.to_s) do |_in, out, wait|
    out.each do |line|
      @output.push(line)
      if block_given?
        yield line, wait
      else
        puts line
      end
    end
    if wait.value.exited? && wait.value.exitstatus.nonzero? # rubocop:disable Style/IfUnlessModifier
      raise StatusError, "Docker command `#{@command.mask_secrets}` failed!"
    end
  end
  @output.join.chomp
end

def initialize(command)
  @command = command
  @output = []
  puts "Docker shell command: `#{@command.mask_secrets}`"
end