old_contents: """
  log of integration tests to write:
  
  command:
      docker run -ti --volume-driver dvol -v hello:/data busybox sh
  expected output:
      Error response from daemon: Voluminous 'hello2' does not exist, create it with: dvol init hello2
  
  command:
      sudo dvol init hello2
  expected output:
      Created volume hello2
      Created branch hello2/master
  
  command:
      sudo dvol commit ...
  expected behaviour:
      a container which only persists its in-memory state to disk occasionally (e.g. on shutdown) has correctly written out its state
  
  command:
      sudo dvol rollback ...
  expected behaviour:
      a container which caches disk state in memory has correctly updated its state (IOW, containers get restarted around rollbacks)
  
  command:
      run a container using a dvol volume
      sudo dvol list
      container names shows up in output
  """
  
new_contents: """
  log of integration tests to write:
  
  command:
      docker-compose up -d (in a directory with appropriate docker-compose.yml file)
  expected behaviour:
      docker containers are started with dvol accordingly
      XXX this doesn't seem to work at the moment
  
  command:
      docker run -ti --volume-driver dvol -v hello:/data busybox sh
  expected output:
      Error response from daemon: Voluminous 'hello2' does not exist, create it with: dvol init hello2
  
  command:
      dvol init hello2
  expected output:
      Created volume hello2
      Created branch hello2/master
  
  command:
      dvol commit ...
  expected behaviour:
      a container which only persists its in-memory state to disk occasionally (e.g. on shutdown) has correctly written out its state
  
  command:
      dvol reset...
  expected behaviour:
      a container which caches disk state in memory has correctly updated its state (IOW, containers get restarted around rollbacks)
  
  command:
      run a container using a dvol volume
      dvol list
      container names shows up in output
  """
  
subject: update integration tests