old_contents: import subprocess
  import pytest
  
  
  def check_docker_output(tool):
      command = 'docker run --rm -ti active-enhancers ' + tool
      process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
      output = process.communicate()
      return output
  
new_contents: import subprocess
  import pytest
  
  
  def check_docker_output(tool):
      command = 'docker run active-enhancers ' + tool
      process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
      output = process.communicate()
      return output
  
subject: Fix the run step.